syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"(arg.span.shrink_to_hi(),"}]}
source_snippet:                             (arg.span.shrink_to_hi(), format!(").{method}()")),
context_before:                             (fn_span.shrink_to_lo().until(arg.span), "(".to_owned()),
context_after:                         ],