syntax_data: {"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"tarms.push(arm);"}]}
source_snippet:                 tarms.push(arm);
context_before:                     MatchArm { pat, arm_data: this.lint_level, has_guard: arm.guard.is_some() };
context_after:                 false