syntax_data: {"ast_node_type":"other","tokens":[{"end":42,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:         | Node::TraitItem(hir::TraitItem {
context_before:         | Node::ImplItem(hir::ImplItem { kind: hir::ImplItemKind::Const(ty, _), span, .. })
context_after:             kind: hir::TraitItemKind::Const(ty, Some(_)),