syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"write!(f,"}]}
source_snippet:                 write!(f, "({:?}: {:?})(", func, func_ty)?;
context_before:                 let args = args.collect::<Vec<_>>();
context_after:                 for arg in args.iter().rev().skip(1).rev() {