@Override
    public void handleInsert(@NotNull InsertionContext context, @NotNull LookupElement item) {
      context.setAddCompletionChar(false);
      EditorModificationUtil.insertStringAtCaret(context.getEditor(), ": ");
      context.commitDocument();
    }
@Override
    public void handleInsert(@NotNull InsertionContext context, @NotNull LookupElement item)