syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"@call(mir_return_to,"}]}
source_snippet:             @call(mir_return_to, args) => {
context_before:         parse_by_kind!(self, expr_id, _, "return block",
context_after:                 self.parse_block(args[0])