docs: public ChangeTagsForResourceRequest withRemoveTagKeys(String... removeTagKeys) {
          if (this.removeTagKeys == null) {
              setRemoveTagKeys(new com.amazonaws.internal.SdkInternalList<String>(removeTagKeys.length));
          }
          for (String ele : removeTagKeys) {
              this.removeTagKeys.add(ele);
          }
          return this;
      }