syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"self.in_if_then_scope(match_scope,"}]}
source_snippet:                 self.in_if_then_scope(match_scope, guard_span, |this| {
context_before:             let (post_guard_block, otherwise_post_guard_block) =
context_after:                     guard_span = this.thir[guard].span;