code: public String getUniqueIdentifier() {
          // TODO should be only this.getRegistry() + Constants.FORWARD_SLASH + this.getRepositoryName()  , tag should be added outside
          return this.getRegistry() + Constants.FORWARD_SLASH + this.getRepositoryName() + Constants.COLON + this.getImageTags().get(0);
      }
docs: /* --- Public methods ---