Minor: Clarify code for KT-18786: Fix J2K to move properties to top

j2k/src/org/jetbrains/kotlin/j2k/ast/ClassBody.kt

@@ -39,7 +39,7 @@ class ClassBody(
         builder append " " append lBrace append "\n"
 
         if (!classKind.isEnum()) {
-            builder.append(membersFiltered.sortedWith(PropertyComparator), "\n")
+            builder.append(membersFiltered.sortedByDescending { it is Property }, "\n")
         }
         else {
             val (constants, otherMembers) = membersFiltered.partition { it is EnumConstant }
@@ -50,7 +50,7 @@ class ClassBody(
                 builder.append(";\n")
             }
 
-            builder.append(otherMembers.sortedWith(PropertyComparator), "\n")
+            builder.append(otherMembers.sortedByDescending { it is Property }, "\n")
         }
 
         appendCompanionObject(builder, membersFiltered.isNotEmpty())
@@ -63,13 +63,4 @@ class ClassBody(
         if (blankLineBefore) builder.append("\n\n")
         builder.append(companionObjectMembers, "\n", "companion object {\n", "\n}")
     }
-}
+}
-
-private object PropertyComparator : Comparator<Member> {
-    override fun compare(o1: Member?, o2: Member?): Int = when {
-        o1 is Property && o2 is Property -> 0
-        o1 is Property -> -1
-        o2 is Property -> 1
-        else -> 0
-    }
-}