pub fn parse_optional_trailing_whitespace<'a>(
config: &Config<'a>,
state: &mut State<'_>,
) -> Result<Option<TrailingWhitespace<'a>>, WhitespaceError>
pub fn parse_optional_trailing_whitespace<'a>(
config: &Config<'a>,
state: &mut State<'_>,
) -> Result<Option<TrailingWhitespace<'a>>, WhitespaceError>