syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"self.print_pat(subpattern,"}]}
source_snippet:                     self.print_pat(subpattern, depth_lvl + 3);
context_before:                     print_indented!(self, "subpattern: Some( ", depth_lvl + 2);
context_after:                     print_indented!(self, ")", depth_lvl + 2);