syntax_data: {"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // Identical to `PrettyPrinter::comma_sep` except there is no space after each comma.
context_after:     fn comma_sep<T>(&mut self, mut elems: impl Iterator<Item = T>) -> Result<(), PrintError>