syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:             | Res::SelfTyAlias { .. }
context_before:             | Res::SelfTyParam { .. }
context_after:             | Res::SelfCtor(..) => PatKind::Leaf { subpatterns },