syntax_data: {"ast_node_type":"function","tokens":[{"end":92,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn should_emit_debug_info_for_binding(&self, name: Symbol, var_id: LocalVarId) -> bool {
context_before:     /// we can recognize them.
context_after:         // For now we only recognize the output of desugaring assigns.