@NotNull
  @Override
  protected String getPrefix(@NotNull String currentTextPrefix) {
    ParametersListLexer lexer = new ParametersListLexer(currentTextPrefix);
    while (lexer.nextToken()) {
      if (lexer.getTokenEnd() == currentTextPrefix.length()) {
        return lexer.getCurrentToken();
      }
    }

    return "";
  }
@NotNull
  @Override
  protected String getPrefix(@NotNull String currentTextPrefix)