code: @Override
      public void register( YogaEntityConfiguration<?>... entityConfigurations )
      {
          for ( YogaEntityConfiguration<?> entityConfiguration : entityConfigurations )
          {
              Class<?> type = entityConfiguration.getEntityClass();
              if ( type == null )
              {
                  throw new IllegalArgumentException("Entity configuration must define an entity class to configure: "
                          + entityConfiguration.getClass().getName());
              }
              _registry.put( type, entityConfiguration );
          }
      }
docs: {@inheritDoc}