syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"this.cfg.push_assign_unit(block,"}]}
source_snippet:                 this.cfg.push_assign_unit(block, source_info, destination, this.tcx);
context_before:                 block = this.stmt_expr(block, expr_id, None).into_block();
context_after:                 block.unit()