syntax_data: {"ast_node_type":"other","tokens":[{"end":9,"kind":"keyword","start":0,"text":"where"}]}
source_snippet:     where
context_before:     pub fn try_map_bound<F, U: TypeVisitable<I>, E>(self, f: F) -> Result<Binder<I, U>, E>
context_after:         F: FnOnce(T) -> Result<U, E>,