syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"///"}]}
source_snippet: /// `do()`. If we just had the lifetime/type parameters from the
context_before: /// subset of `foo`, probably just the scope of the call to the to
context_after: /// enclosing function, we couldn't name this lifetime `'b`. Note that