fn __pop_Variant12(
__symbols: &mut Vec<(LexerPosition, __Symbol, LexerPosition)>,
) -> (LexerPosition, Vec<LayoutQualifierSpec>, LexerPosition)
fn __pop_Variant12(
__symbols: &mut Vec<(LexerPosition, __Symbol, LexerPosition)>,
) -> (LexerPosition, Vec<LayoutQualifierSpec>, LexerPosition)