syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"LangItem::BitOrAssign"}]}
source_snippet:         LangItem::BitOrAssign => "bitor_assign",
context_before:         LangItem::BitAndAssign => "bitand_assign",
context_after:         LangItem::ShlAssign => "shl_assign",