getFirstChild().siblings -> allChildren

compiler/frontend/src/org/jetbrains/kotlin/psi/FindDocComment.kt

@@ -21,9 +21,10 @@ import org.jetbrains.kotlin.kdoc.psi.api.KDoc
 import org.jetbrains.kotlin.psi.psiUtil.siblings
 import com.intellij.psi.PsiWhiteSpace
 import com.intellij.psi.PsiComment
+import org.jetbrains.kotlin.psi.psiUtil.allChildren
 
 fun findDocComment(declaration: JetDeclaration): KDoc? {
-    return declaration.getFirstChild().siblings()
+    return declaration.allChildren
             .dropWhile { it !is KDoc && (it is PsiWhiteSpace || it is PsiComment) }
             .first() as? KDoc
 }

idea/src/org/jetbrains/kotlin/idea/conversion/copy/DataForConversion.kt

@@ -168,7 +168,7 @@ data class DataForConversion private(
         }
 
         private fun tryClipLeftSide(element: PsiElement, leftBound: Int)
-                = tryClipSide(element, leftBound, { range }, { getFirstChild().siblings() })
+                = tryClipSide(element, leftBound, { range }, { allChildren })
 
         private fun tryClipRightSide(element: PsiElement, rightBound: Int): Int? {
             fun Int.transform() = Int.MAX_VALUE - this