syntax_data: {"ast_node_type":"import","tokens":[{"end":81,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! - A `TypeVisitor` may call into another `TypeVisitable` impl, because some of
context_before: //!   `TypeVisitor` when they encounter a type of interest.
context_after: //!   the types of interest are recursive and can contain other types of interest.