syntax_data: {"ast_node_type":"function","tokens":[{"end":55,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet: fn enable_precise_capture(closure_span: Span) -> bool {
context_before: /// Precise capture is enabled if user is using Rust Edition 2021 or higher.
context_after:     closure_span.at_least_rust_2021()