syntax_data: {"ast_node_type":"other","tokens":[{"end":98,"kind":"keyword","start":0,"text":"emit_vptr:"}]}
source_snippet:                 emit_vptr: emit_vptr && has_entries && !tcx.sess.opts.unstable_opts.no_trait_vptr,
context_before:                 trait_ref: inner_most_trait_ref,
context_after:             })?;