2 files changed, 10 insertions, 1 deletions
diff --git a/core/src/main/kotlin/model/documentableProperties.kt b/core/src/main/kotlin/model/documentableProperties.kt
index 2845c7fc..991f5311 100644
--- a/core/src/main/kotlin/model/documentableProperties.kt
+++ b/core/src/main/kotlin/model/documentableProperties.kt
@@ -25,3 +25,12 @@ data class ImplementedInterfaces(val interfaces: SourceSetDependent<List<TypeCon
 
     override val key: ExtraProperty.Key<Documentable, *> = ImplementedInterfaces
 }
+
+data class ExceptionInSupertypes(val exceptions: SourceSetDependent<List<TypeConstructor>>): ExtraProperty<Documentable> {
+    companion object : ExtraProperty.Key<Documentable, ExceptionInSupertypes> {
+        override fun mergeStrategyFor(left: ExceptionInSupertypes, right: ExceptionInSupertypes) =
+            MergeStrategy.Replace(ExceptionInSupertypes(left.exceptions + right.exceptions))
+    }
+
+    override val key: ExtraProperty.Key<Documentable, *> = ExceptionInSupertypes
+}
+\ No newline at end of file
diff --git a/core/src/main/kotlin/model/properties/PropertyContainer.kt b/core/src/main/kotlin/model/properties/PropertyContainer.kt
index 19189b39..162f1bc8 100644
--- a/core/src/main/kotlin/model/properties/PropertyContainer.kt
+++ b/core/src/main/kotlin/model/properties/PropertyContainer.kt
@@ -18,7 +18,7 @@ data class PropertyContainer<C : Any> internal constructor(
 
     companion object {
         fun <T : Any> empty(): PropertyContainer<T> = PropertyContainer(emptyMap())
-        fun <T : Any> withAll(vararg extras: ExtraProperty<T>) = empty<T>().addAll(extras.toList())
+        fun <T : Any> withAll(vararg extras: ExtraProperty<T>?) = empty<T>().addAll(extras.filterNotNull())
         fun <T : Any> withAll(extras: Collection<ExtraProperty<T>>) = empty<T>().addAll(extras)
     }
 }