wip

Signed-off-by: shedaniel <daniel@shedaniel.me>

37 files changed, 922 insertions, 75 deletions

diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/Renderer.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/Renderer.java
index f6a9c39ba..2c1b3d86d 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/Renderer.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/Renderer.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api;
 
 import com.mojang.blaze3d.vertex.PoseStack;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractEntryRenderer.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractEntryRenderer.java
index 0fad3333a..bb0a6c556 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractEntryRenderer.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractEntryRenderer.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import net.minecraft.client.gui.GuiComponent;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractRenderer.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractRenderer.java
index 23b90db65..a3a4d1a8a 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractRenderer.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/AbstractRenderer.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import me.shedaniel.rei.api.Renderer;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BatchEntryRenderer.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BatchEntryRenderer.java
index 2384c2099..558b92638 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BatchEntryRenderer.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BatchEntryRenderer.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import com.mojang.blaze3d.vertex.PoseStack;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BuiltinEntryTypes.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BuiltinEntryTypes.java
index a588bfa9f..d50267573 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BuiltinEntryTypes.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/BuiltinEntryTypes.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import me.shedaniel.rei.impl.Internals;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/ComparisonContext.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/ComparisonContext.java
index 3afebbcba..8c7b7a0c2 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/ComparisonContext.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/ComparisonContext.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 public enum ComparisonContext {
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryDefinition.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryDefinition.java
index fcc6085dc..4a97aa8a4 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryDefinition.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryDefinition.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import me.shedaniel.architectury.utils.Fraction;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryRenderer.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryRenderer.java
index 2606f1b8f..8c9bbba58 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryRenderer.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryRenderer.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import com.mojang.blaze3d.vertex.PoseStack;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryStacks.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryStacks.java
index f2123aa6e..0dd9ffa3d 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryStacks.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryStacks.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import com.google.common.collect.ImmutableList;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryType.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryType.java
index 1bbd98071..0d4ebb2c2 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryType.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryType.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import me.shedaniel.rei.impl.Internals;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeBridge.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeBridge.java
index 2d9ac1e1e..c15f85b4f 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeBridge.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeBridge.java
@@ -1,11 +1,36 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import me.shedaniel.rei.api.EntryStack;
 import net.minecraft.world.InteractionResultHolder;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.stream.Stream;
 
 @FunctionalInterface
 public interface EntryTypeBridge<A, B> {
+    @NotNull
     InteractionResultHolder<Stream<EntryStack<B>>> bridge(EntryStack<A> object);
 }
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeRegistry.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeRegistry.java
index 689c6f99c..931a9a63e 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeRegistry.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/EntryTypeRegistry.java
@@ -1,8 +1,32 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import me.shedaniel.rei.impl.Internals;
 import net.minecraft.resources.ResourceLocation;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 public interface EntryTypeRegistry {
     @NotNull
@@ -18,7 +42,9 @@ public interface EntryTypeRegistry {
     
     <A, B> void registerBridge(EntryType<A> original, EntryType<B> destination, EntryTypeBridge<A, B> bridge);
     
+    @Nullable
     EntryDefinition<?> get(ResourceLocation id);
     
+    @NotNull
     <A, B> Iterable<EntryTypeBridge<A, B>> getBridgesFor(EntryType<A> original, EntryType<B> destination);
 }
\ No newline at end of file
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/VanillaEntryTypes.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/VanillaEntryTypes.java
index 553698da4..047f33439 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/VanillaEntryTypes.java
+++ b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/api/entry/VanillaEntryTypes.java
@@ -1,3 +1,26 @@
+/*
+ * This file is licensed under the MIT License, part of Roughly Enough Items.
+ * Copyright (c) 2018, 2019, 2020 shedaniel
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package me.shedaniel.rei.api.entry;
 
 import me.shedaniel.architectury.fluid.FluidStack;
diff --git a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/gui/config/AppearanceTheme.java b/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/gui/config/AppearanceTheme.java
index 89bd3db97..3fcba4383 100644
--- a/RoughlyEnoughItems-api/src/main/java/me/shedaniel/rei/gui/config/AppearanceThem