Use proper method for emptying container item (#1034)

* Use proper method for emptying container item

* Add javadoc

1 files changed, 7 insertions, 0 deletions

diff --git a/src/main/java/gregtech/api/util/GT_Utility.java b/src/main/java/gregtech/api/util/GT_Utility.java
index 65357e2f37..412f7e7057 100644
--- a/src/main/java/gregtech/api/util/GT_Utility.java
+++ b/src/main/java/gregtech/api/util/GT_Utility.java
@@ -1270,6 +1270,9 @@ public class GT_Utility {
         return tData == null ? null : tData.fluid.copy();
     }
 
+    /**
+     * Get empty fluid container from filled one.
+     */
     public static ItemStack getContainerForFilledItem(ItemStack aStack, boolean aCheckIFluidContainerItems) {
         if (isStackInvalid(aStack)) return null;
         FluidContainerData tData = sFilledContainerToData.get(new GT_ItemStack(aStack));
@@ -1281,6 +1284,10 @@ public class GT_Utility {
         return null;
     }
 
+    /**
+     * Get general container item, not only fluid container but also non-consumable item.
+     * {@link #getContainerForFilledItem} works better for fluid container.
+     */
     public static ItemStack getContainerItem(ItemStack aStack, boolean aCheckIFluidContainerItems) {
         if (isStackInvalid(aStack)) return null;
         if (aStack.getItem().hasContainerItem(aStack)) return aStack.getItem().getContainerItem(aStack);