syntax_data: {"ast_node_type":"other","tokens":[{"end":27,"kind":"keyword","start":0,"text":"block"}]}
source_snippet:                     block =
context_before:                     let lhs = unpack!(block = this.as_place(block, lhs));
context_after:                         this.build_drop_and_replace(block, lhs_expr.span, lhs, rhs).into_block();