{"ast_node_type":"other","tokens":[{"end":72,"kind":"keyword","start":0,"text":"ModItemId::Union(ast_id)"}]}
                            ModItemId::Union(ast_id) => ast_id.upcast(),
                            ModItemId::Struct(ast_id) => ast_id.upcast(),
                            ModItemId::Enum(ast_id) => ast_id.upcast(),