code: public Accelerator withIpSets(IpSet... ipSets) {
          if (this.ipSets == null) {
              setIpSets(new java.util.ArrayList<IpSet>(ipSets.length));
          }
          for (IpSet ele : ipSets) {
              this.ipSets.add(ele);
          }
          return this;
      }
docs: <p>
  IP address set associated with the accelerator.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setIpSets(java.util.Collection)} or {@link #withIpSets(java.util.Collection)} if you want to override the
  existing values.
  </p>
  
  @param ipSets
  IP address set associated with the accelerator.
  @return Returns a reference to this object so that method calls can be chained together.