syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"matches!(rhs.kind(),"}]}
source_snippet:                 matches!(rhs.kind(), ty::Dynamic(rhs_preds, ..) if
context_before:                 // actually sorts and deduplicates these, that doesn't work.
context_after:                     lhs_preds.principal_def_id() == rhs_preds.principal_def_id()