syntax_data: {"ast_node_type":"other","tokens":[{"end":44,"kind":"keyword","start":0,"text":"self.iter().filter_map(|predicate|"}]}
source_snippet:         self.iter().filter_map(|predicate| {
context_before:     ) -> impl Iterator<Item = ty::Binder<'tcx, ExistentialProjection<'tcx>>> {
context_after:             predicate