syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"hir::AssignOpKind::ShlAssign"}]}
source_snippet:         hir::AssignOpKind::ShlAssign => AssignOp::ShlAssign,
context_before:         hir::AssignOpKind::BitOrAssign => AssignOp::BitOrAssign,
context_after:         hir::AssignOpKind::ShrAssign => AssignOp::ShrAssign,