syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // trait_ref: for<'x> T: Foo1<'^0.0>; args: [T, '^0.0]
context_before:         // Working through the second example:
context_after:         // predicate: for<'b> Self: Bar1<'a, '^0.0>; args: [Self, 'a, '^0.0]