syntax_data: {"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"out_place:"}]}
source_snippet:                                 out_place: out_expr.map(|out_expr| {
context_before:                                 in_value: unpack!(block = this.as_local_operand(block, in_expr)),
context_after:                                     unpack!(block = this.as_place(block, out_expr))