docs: public BatchGetProjectsResult withProjectsNotFound(String... projectsNotFound) {
          if (this.projectsNotFound == null) {
              setProjectsNotFound(new java.util.ArrayList<String>(projectsNotFound.length));
          }
          for (String ele : projectsNotFound) {
              this.projectsNotFound.add(ele);
          }
          return this;
      }