add isKotlinSourceElement method to Source interface in order to recognize kotlin source elements during compilation

core/descriptors.runtime/src/org/jetbrains/kotlin/load/java/components/RuntimeSourceElementFactory.kt

@@ -23,6 +23,8 @@ import org.jetbrains.kotlin.load.java.structure.reflect.ReflectJavaElement
 
 public object RuntimeSourceElementFactory : JavaSourceElementFactory {
     private class RuntimeSourceElement(override val javaElement: ReflectJavaElement) : JavaSourceElement {
+
+        override fun isKotlinSourceElement(): Boolean = false
         override fun toString() = javaClass.name + ": " + javaElement.toString()
     }
 

core/descriptors.runtime/src/org/jetbrains/kotlin/load/kotlin/reflect/ReflectAnnotationSource.kt

@@ -18,4 +18,6 @@ package org.jetbrains.kotlin.load.kotlin.reflect
 
 import org.jetbrains.kotlin.descriptors.SourceElement
 
-public class ReflectAnnotationSource(public val annotation: Annotation) : SourceElement
+public class ReflectAnnotationSource(public val annotation: Annotation) : SourceElement {
+    override fun isKotlinSourceElement(): Boolean = false
+}