syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"TestKind::Len"}]}
source_snippet:                 TestKind::Len { len: len as u64, op }
context_before:                 let op = if variable_length { BinOp::Ge } else { BinOp::Eq };
context_after:             }