syntax_data: {"ast_node_type":"other","tokens":[{"end":32,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:     if !enclosing_ctxt.is_root()
context_before:     let expn_data1 = ctxt.outer_expn_data();
context_after:         && expn_data1.call_site == enclosing_ctxt.outer_expn_data().call_site