code: public ListThreatIntelSetsResult withThreatIntelSetIds(String... threatIntelSetIds) {
          if (this.threatIntelSetIds == null) {
              setThreatIntelSetIds(new java.util.ArrayList<String>(threatIntelSetIds.length));
          }
          for (String ele : threatIntelSetIds) {
              this.threatIntelSetIds.add(ele);
          }
          return this;
      }
docs: <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setThreatIntelSetIds(java.util.Collection)} or {@link #withThreatIntelSetIds(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param threatIntelSetIds
  @return Returns a reference to this object so that method calls can be chained together.