private static void completeVariable(EditorTextField editorTextField, PsiType type) {
      Editor editor = editorTextField.getEditor();
      String prefix = editorTextField.getText();
      Set<LookupElement> set = new LinkedHashSet<>();
      JavaCompletionUtil.completeVariableNameForRefactoring(editorTextField.getProject(), set, prefix, type, VariableKind.PARAMETER);

      LookupElement[] lookupItems = set.toArray(LookupElement.EMPTY_ARRAY);
      editor.getCaretModel().moveToOffset(prefix.length());
      editor.getSelectionModel().removeSelection();
      LookupManager.getInstance(editorTextField.getProject()).showLookup(editor, lookupItems, prefix);
    }
private static void completeVariable(EditorTextField editorTextField, PsiType type)