@Override
    public Persister<ENTITY> persister() {
        return entity -> persist(entity, f -> insertColumnFilter.test(columnsByFields.get(f)), insertStatement);
    }
Default implementation of the {@link SqlPersistence}-interface.

@param <ENTITY>  the entity type

@author  Emil Forslund
@author  Dan Lawesson
@since   3.0.1
runtime-parent/runtime-core/src/main/java/com/speedment/runtime/core/internal/component/sql/SqlPersistenceProviderImpl.java