syntax_data: {"ast_node_type":"other","tokens":[{"end":33,"kind":"keyword","start":0,"text":"s.push_str(\","}]}
source_snippet:                 s.push_str(", ");
context_before:             if cycle_len > 1 && i < cycle_len - 2 {
context_after:             } else if cycle_len > 1 && i == cycle_len - 2 {