Java to Kotlin: dropped Node interface

j2k/src/org/jetbrains/jet/j2k/ast/Element.kt

@@ -16,9 +16,10 @@
 
 package org.jetbrains.jet.j2k.ast
 
+trait Element {
+    public fun toKotlin(): String
 
-trait Element : Node {
-    val isEmpty: Boolean get() = false
+    public val isEmpty: Boolean get() = false
 
     object Empty : Element {
         override fun toKotlin() = ""

j2k/src/org/jetbrains/jet/j2k/ast/Node.kt

@@ -1,22 +0,0 @@
-/*
- * Copyright 2010-2013 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.
- */
-
-package org.jetbrains.jet.j2k.ast
-
-
-trait Node {
-    public fun toKotlin(): String
-}

j2k/src/org/jetbrains/jet/j2k/ast/Util.kt

@@ -18,7 +18,7 @@ package org.jetbrains.jet.j2k.ast
 
 import java.util.ArrayList
 
-fun List<Node>.toKotlin(separator: String, prefix: String = "", postfix: String = ""): String
+fun List<Element>.toKotlin(separator: String, prefix: String = "", postfix: String = ""): String
         = if (isNotEmpty()) map { it.toKotlin() }.makeString(separator, prefix, postfix) else ""
 
 fun String.withSuffix(suffix: String): String = if (isEmpty()) "" else this + suffix