syntax_data: {"ast_node_type":"function","tokens":[{"end":46,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn def_path(&self, def: DefId) -> DefPath;
context_before:     fn def_key(&self, def: DefId) -> DefKey;
context_after:     fn def_path_hash(&self, def: DefId) -> DefPathHash;