syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"call_site_ctxt"}]}
source_snippet:             call_site_ctxt = self.alloc_ctxt(call_site_ctxt, expn_id, transparency);
context_before:         for (expn_id, transparency) in self.marks(ctxt) {
context_after:         }