fn parse_modern_alpha<'i, 't>(
context: &ParserContext<'_>,
arguments: &mut Parser<'i, 't>,
allowed_channel_keywords: ChannelKeyword,
) -> Result<ColorComponent<NumberOrPercentageComponent>, ParseError<'i>>fn parse_modern_alpha<'i, 't>(
context: &ParserContext<'_>,
arguments: &mut Parser<'i, 't>,
allowed_channel_keywords: ChannelKeyword,
) -> Result<ColorComponent<NumberOrPercentageComponent>, ParseError<'i>>