fn is_impl_single_line(
context: &RewriteContext<'_>,
items: &[Box<AssocItem>],
result: &str,
where_clause_str: &str,
item: &Item,
) -> Result<bool, RewriteError>fn is_impl_single_line(
context: &RewriteContext<'_>,
items: &[Box<AssocItem>],
result: &str,
where_clause_str: &str,
item: &Item,
) -> Result<bool, RewriteError>