syntax_data: {"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":".eq(DefineOpaqueTypes::Yes,"}]}
source_snippet:             .eq(DefineOpaqueTypes::Yes, obligation_trait_ref, found_trait_ref)
context_before:             .at(&obligation.cause, obligation.param_env)
context_after:             .map(|InferOk { mut obligations, .. }| {