syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"Ok(Some(overlap))"}]}
source_snippet:                 Ok(Some(overlap)) => (Some(overlap.error), Some(overlap.kind)),
context_before:                 Err(overlap) => (Some(overlap), None),
context_after:                 Ok(None) => (None, None),