syntax_data: {"ast_node_type":"other","tokens":[{"end":26,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // bounds.
context_before:                 // we can't deduce any parameters for, so make sure the argument index is in
context_after:                 if let Some(deduced_param_attrs) = deduced_param_attrs.get(arg_idx)