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use {
crate::append_vec::{StoredAccountMeta, StoredMeta},
solana_sdk::{account::AccountSharedData, clock::Slot},
std::sync::{Arc, RwLock},
};
pub trait AccountsUpdateNotifierInterface: std::fmt::Debug {
fn notify_account_update(&self, slot: Slot, meta: &StoredMeta, account: &AccountSharedData);
fn notify_account_restore_from_snapshot(&self, slot: Slot, account: &StoredAccountMeta);
fn notify_end_of_restore_from_snapshot(&self);
}
pub type AccountsUpdateNotifier = Arc<RwLock<dyn AccountsUpdateNotifierInterface + Sync + Send>>;