code: public void serviceName_namespaces_namespaceId_images_imageId_permissions_permissionId_DELETE(String serviceName, String namespaceId, String imageId, String permissionId) throws IOException {
  		String qPath = "/caas/registry/{serviceName}/namespaces/{namespaceId}/images/{imageId}/permissions/{permissionId}";
  		StringBuilder sb = path(qPath, serviceName, namespaceId, imageId, permissionId);
  		exec(qPath, "DELETE", sb.toString(), null);
  	}
docs: Delete image permissions.
  
  REST: DELETE /caas/registry/{serviceName}/namespaces/{namespaceId}/images/{imageId}/permissions/{permissionId}
  @param imageId [required] Image id
  @param namespaceId [required] Namespace id
  @param permissionId [required] Permission id
  @param serviceName [required] Service name
  
  API beta