private void consumeIllegalLeftoverExpressionTokens() {
    SyntaxTreeBuilder.Marker mark = myBuilder.mark();
    int initialBalance = myPendingClosingBraces.size();
    boolean consumedAny = false;
    while (!myBuilder.eof() && !atAnyOfTokens(PyTokenTypes.IF_KEYWORD,
                                              PyTokenTypes.COLON,
                                              PyTokenTypes.AS_KEYWORD,
                                              PyTokenTypes.OR,
                                              PyTokenTypes.STATEMENT_BREAK)) {
      IElementType token = myBuilder.getTokenType();
      if (myPendingClosingBraces.size() == initialBalance &&
          (myPendingClosingBraces.contains(token) || token == PyTokenTypes.COMMA)) {
        break;
      }
      nextToken();
      consumedAny = true;
      if (PyTokenTypes.ALL_BRACES.contains(token)) {
        registerConsumedBracket(token);
      }
    }
    if (consumedAny) {
      mark.error(PyParsingBundle.message("unexpected.tokens"));
    }
    else {
      mark.drop();
    }
  }
private void consumeIllegalLeftoverExpressionTokens()