Function cssparser::rules_and_declarations::parse_qualified_rule

fn parse_qualified_rule<'i, 't, P, E>(
    start: &ParserState,
    input: &mut Parser<'i, 't>,
    parser: &mut P,
    delimiters: Delimiters
) -> Result<<P as QualifiedRuleParser<'i>>::QualifiedRule, ParseError<'i, E>>where
    P: QualifiedRuleParser<'i, Error = E>,