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