def get_storage(address)
      storage_root = get_account_item address, :storage
      SecureTrie.new PruningTrie.new(db, storage_root)
    end
def get_storage(address)
      storage_root = get_account_item address, :storage
      SecureTrie.new PruningTrie.new(db, storage_root)
    end
Get the trie holding an account's storage.

 @param address [String] the address of the account (binary or hex string)

 @return [Trie] the storage trie of account