docs: public OrganizationModel attachOrganization(OrganizationModel organizationModel, ArchiveModel archiveModel)
      {
          for (OrganizationModel existingOrganizationModel : archiveModel.getOrganizationModels())
          {
              if (existingOrganizationModel.equals(organizationModel))
                  return organizationModel;
          }
          organizationModel.addArchiveModel(archiveModel);
          return organizationModel;
      }