fn __action688<'i, L>(
    ctx: &ParseContext,
    __0: (LexerPosition, CaseLabelData, LexerPosition),
) -> CaseLabelwhere
    L: HasLexerError,fn __action688<'i, L>(
    ctx: &ParseContext,
    __0: (LexerPosition, CaseLabelData, LexerPosition),
) -> CaseLabelwhere
    L: HasLexerError,