syntax_data: {"ast_node_type":"other","tokens":[{"end":100,"kind":"keyword","start":0,"text":".push(SyntaxContextData"}]}
source_snippet:             .push(SyntaxContextData { dollar_crate_name: sym::dummy, ..SyntaxContextData::root() });
context_before:         self.syntax_context_data
context_after:         self.syntax_context_map.insert(key, ctxt);