docs: function getEntityInformations(entityName, complementaryInformation) {
      checkIsString('entityName', entityName);
      checkIsObject('complementaryInformation', complementaryInformation);
      const key = entityName.split(SEPARATOR);
      if (!computedEntityContainer.hasIn(key)) {
          _buildEntityInformation(entityName);
      }
      return computedEntityContainer.get(entityName).mergeDeep(complementaryInformation).toJS();
  }