code: public PutInstancePublicPortsRequest withPortInfos(PortInfo... portInfos) {
          if (this.portInfos == null) {
              setPortInfos(new java.util.ArrayList<PortInfo>(portInfos.length));
          }
          for (PortInfo ele : portInfos) {
              this.portInfos.add(ele);
          }
          return this;
      }
docs: <p>
  Specifies information about the public port(s).
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setPortInfos(java.util.Collection)} or {@link #withPortInfos(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param portInfos
  Specifies information about the public port(s).
  @return Returns a reference to this object so that method calls can be chained together.