syntax_data: {"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":".filter_map(move"}]}
source_snippet:                 .filter_map(move |(pred, _)| {
context_before:                 .iter_identity_copied()
context_after:                     pred.instantiate_supertrait(tcx, ty::Binder::dummy(inner_most_trait_ref))