ktPsiUtil: cleanup code

compiler/psi/src/org/jetbrains/kotlin/psi/psiUtil/ktPsiUtil.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.psi.psiUtil
@@ -289,7 +278,7 @@ inline fun <reified T : KtElement> forEachDescendantOfTypeVisitor(noinline block
 
 inline fun <reified T : KtElement, R> flatMapDescendantsOfTypeVisitor(
     accumulator: MutableCollection<R>,
-    noinline map: (T) -> Collection<R>
+    noinline map: (T) -> Collection<R>,
 ): KtVisitorVoid {
     return forEachDescendantOfTypeVisitor<T> { accumulator.addAll(map(it)) }
 }
@@ -559,7 +548,7 @@ fun KtCallExpression.getOrCreateValueArgumentList(): KtValueArgumentList {
     valueArgumentList?.let { return it }
     return addAfter(
         KtPsiFactory(this).createCallArguments("()"),
-        typeArgumentList ?: calleeExpression
+        typeArgumentList ?: calleeExpression,
     ) as KtValueArgumentList
 }