syntax_data: {"ast_node_type":"impl","tokens":[{"end":68,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// proven when checking impls. This means that (e.g.) the `impl Bar
context_before: /// To resolve this, we elaborate the WF requirements that must be
context_after: /// for T` will be forced to prove not only that `T: Foo` but also `T: