syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"self.projections.retain(|_,"}]}
source_snippet:         self.projections.retain(|_, child| !self.inner_values[*child].is_empty());
context_before:         #[allow(rustc::potential_query_instability)]
context_after:     }