fn __pop_Variant39(
    __symbols: &mut Vec<(LexerPosition, __Symbol, LexerPosition)>,
) -> (LexerPosition, Vec<Identifier>, LexerPosition)fn __pop_Variant39(
    __symbols: &mut Vec<(LexerPosition, __Symbol, LexerPosition)>,
) -> (LexerPosition, Vec<Identifier>, LexerPosition)