syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":".type_of(shifted_alias_ty.def_id)"}]}
source_snippet:                 .type_of(shifted_alias_ty.def_id)
context_before:                 .tcx
context_after:                 .instantiate(self.tcx, shifted_alias_ty.args);