syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // FIXME(explicit_tail_calls) code duplication with `build_scope_drops`
context_before:         for scope in self.scopes.scopes[1..].iter().rev().skip(1) {
context_after:             for drop_data in scope.drops.iter().rev() {