syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"self.report_arguments_mismatch(expr.span,"}]}
source_snippet:                 self.report_arguments_mismatch(expr.span, caller_sig, callee_sig);
context_before:             if caller_sig.inputs() != callee_sig.inputs() {
context_after:             }