fn __action313<'i, L>(
    ctx: &ParseContext,
    (_, l, _): (LexerPosition, LexerPosition, LexerPosition),
    (_, s, _): (LexerPosition, SingleDeclarationData, LexerPosition),
    (_, r, _): (LexerPosition, LexerPosition, LexerPosition),
) -> SingleDeclarationwhere
    L: HasLexerError,