syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"MirSource::item(self.def_id.to_def_id()),"}]}
source_snippet:             MirSource::item(self.def_id.to_def_id()),
context_before:         let mut body = Body::new(
context_after:             self.cfg.basic_blocks,