syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:             for bound in self.tcx().item_bounds(assoc_type).transpose_iter() {
context_before:             // Prevent, e.g., `dyn Iterator<Item = str>`.
context_after:                 let normalized_bound = normalize_with_depth_to(