syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"for"}]}
source_snippet:             for (fake_read_expr, cause, hir_id) in fake_reads.iter() {
context_before:             print_indented!(self, "fake_reads: [", depth_lvl + 1);
context_after:                 print_indented!(self, "(", depth_lvl + 2);