syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"this.cfg.push_assign(block,"}]}
source_snippet:                     this.cfg.push_assign(block, source_info, lhs, rhs);
context_before:                     let lhs = unpack!(block = this.as_place(block, lhs));
context_after:                 }