use async_trait;
use ;
use DataError;
/// Handler general, serializable objects
/// This is ideal for storing objects for a relational data model is not the best fit
/// or objects used very rarely, i.e. descriptions of complex assets.
/// The ID is a string, which allows for naming object by some convention, e.g. "EUR_cal" for
/// the standard EUR area calendar definition instead of just some arbitrary number.