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/// The error type for the functionalities around
/// [`Cache::invalidate_entries_if`][invalidate-if] method.
///
/// [invalidate-if]: ./sync/struct.Cache.html#method.invalidate_entries_if
#[derive(thiserror::Error, Debug)]
pub enum PredicateError {
    /// This cache does not have a necessary configuration enabled to support
    /// invalidating entries with a closure.
    ///
    /// To enable the configuration, call
    /// [`CacheBuilder::support_invalidation_closures`][support-invalidation-closures]
    /// method at the cache creation time.
    ///
    /// [support-invalidation-closures]: ./sync/struct.CacheBuilder.html#method.support_invalidation_closures
    #[error(
        "Support for invalidation closures is disabled in this cache. \
    Please enable it by calling the support_invalidation_closures method \
    of the builder at the cache creation time"
    )]
    InvalidationClosuresDisabled,
}