[ Version ( since = "0.13.2" ) ]
public string storage_provider { get; }
The storage provider for this account.
The name of the account storage implementation. When this is the empty string the account is internally stored.
This property cannot change once an Account has been created.
This is not guaranteed to have been retrieved until the TP_ACCOUNT_FEATURE_STORAGE feature has been prepared; until then,
the value is null.