syntax_data: {"ast_node_type":"variable","tokens":[{"end":84,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let user_provided_types = self.typeck_results.user_provided_types();
context_before:                 // Check for a user-given type annotation on this `cast`
context_after:                 let user_ty = user_provided_types.get(cast_ty.hir_id);