syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"self.rvalue_scopes.temporary_scope(self.region_scope_tree,"}]}
source_snippet:             self.rvalue_scopes.temporary_scope(self.region_scope_tree, expr.hir_id.local_id);
context_before:         let (temp_lifetime, backwards_incompatible) =
context_after:         let fun = self.method_callee(expr, span, overloaded_callee);