{"ast_node_type":"import","tokens":[{"end":96,"kind":"keyword","start":0,"text":"///"}]}
    /// - It is a `const` or `const fn`. This is *not* because we need the MIR to interpret them
    /// - It needs cross-crate MIR (see the module-level doc comment above).
    ///   (MIR for const-eval and MIR for codegen is separate, and MIR for const-eval is always