syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":".flat_map(|i|"}]}
source_snippet:             .flat_map(|i| (0..2).map(move |j| (i, j)))
context_before:         let statements_and_terminator = (0..=body[block].statements.len())
context_after:             .map(move |(i, kind)| {