syntax_data: {"ast_node_type":"other","tokens":[{"end":58,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:             for feat in abi_feature_constraints.required {
context_before:             let abi_feature_constraints = self.abi_required_features();
context_after:                 // The feature might be enabled by default so we can't *require* it to show up.