syntax_data: {"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let own_entries = trait_methods.filter_map(move |&trait_method| {
context_before:     // Now list each method's DefId (for within its trait).
context_after:         debug!("own_existential_vtable_entry: trait_method={:?}", trait_method);