syntax_data: {"ast_node_type":"impl","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // impl `impl<T: ?Sized> Any for T { .. }`. This really shouldn't exist but is
context_before:         // should use the vtable method and not the method provided by the user-defined
context_after:         // necessary due to #57893. We again arbitrarily prefer the applicable candidate