syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"|"}]}
source_snippet:             | PatKind::Slice { ref prefix, ref slice, ref suffix } => {
context_before:             PatKind::Array { ref prefix, ref slice, ref suffix }
context_after:                 let from = u64::try_from(prefix.len()).unwrap();