{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"(unstable,"}]}
    (unstable, adt_const_params, "1.56.0", Some(95174)),
    /// Allows additional const parameter types, such as `[u8; 10]` or user defined types
    /// Allows defining an `#[alloc_error_handler]`.