syntax_data: {"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"ty::Opaque"}]}
source_snippet:                     ty::Opaque => TypeFlags::HAS_TY_OPAQUE,
context_before:                     ty::Free => TypeFlags::HAS_TY_FREE_ALIAS,
context_after:                     ty::Inherent => TypeFlags::HAS_TY_INHERENT,