syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //!   the types of interest are recursive and can contain other types of interest.
context_before: //! - A `TypeVisitor` may call into another `TypeVisitable` impl, because some of
context_after: //! - A `TypeVisitor` may also call into a `TypeSuperVisitable` impl, because each