KT-4893 Code completion should not show multiple functions with the same signature

#KT-4893 Fixed

idea/idea-core/src/org/jetbrains/kotlin/idea/core/Utils.kt

@@ -29,7 +29,7 @@ public fun Call.mapArgumentsToParameters(targetDescriptor: CallableDescriptor):
     if (parameters.isEmpty()) return emptyMap()
 
     val map = HashMap<ValueArgument, ValueParameterDescriptor>()
-    val parametersByName = parameters.toMap { it.getName().asString() }
+    val parametersByName = parameters.toMap { it.getName() }
 
     var positionalArgumentIndex: Int? = 0
 
@@ -38,7 +38,7 @@ public fun Call.mapArgumentsToParameters(targetDescriptor: CallableDescriptor):
             map[argument] = parameters.last()
         }
         else {
-            val argumentName = argument.getArgumentName()?.getReferenceExpression()?.getReferencedName()
+            val argumentName = argument.getArgumentName()?.asName
 
             if (argumentName != null) {
                 if (targetDescriptor.hasStableParameterNames()) {

idea/idea-core/src/org/jetbrains/kotlin/idea/core/psiModificationUtils.kt

@@ -61,7 +61,7 @@ public fun JetFunctionLiteralArgument.moveInsideParenthesesAndReplaceWith(
     val newCallExpression = oldCallExpression.copy() as JetCallExpression
 
     val psiFactory = JetPsiFactory(getProject())
-    val argument = if (newCallExpression.getValueArgumentsInParentheses().any { it.getArgumentName() != null }) {
+    val argument = if (newCallExpression.getValueArgumentsInParentheses().any { it.isNamed() }) {
         psiFactory.createArgument(replacement, functionLiteralArgumentName)
     }
     else {