docs: public ListElasticsearchVersionsResult withElasticsearchVersions(String... elasticsearchVersions) {
          if (this.elasticsearchVersions == null) {
              setElasticsearchVersions(new java.util.ArrayList<String>(elasticsearchVersions.length));
          }
          for (String ele : elasticsearchVersions) {
              this.elasticsearchVersions.add(ele);
          }
          return this;
      }