syntax_data: {"ast_node_type":"function","tokens":[{"end":64,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn equate_int_vids_raw(&self, a: ty::IntVid, b: ty::IntVid);
context_before:     fn equate_ty_vids_raw(&self, a: ty::TyVid, b: ty::TyVid);
context_after:     fn equate_float_vids_raw(&self, a: ty::FloatVid, b: ty::FloatVid);