code: public ScheduledInstancesNetworkInterface withPrivateIpAddressConfigs(ScheduledInstancesPrivateIpAddressConfig... privateIpAddressConfigs) {
          if (this.privateIpAddressConfigs == null) {
              setPrivateIpAddressConfigs(new com.amazonaws.internal.SdkInternalList<ScheduledInstancesPrivateIpAddressConfig>(privateIpAddressConfigs.length));
          }
          for (ScheduledInstancesPrivateIpAddressConfig ele : privateIpAddressConfigs) {
              this.privateIpAddressConfigs.add(ele);
          }
          return this;
      }
docs: <p>
  The private IPv4 addresses.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setPrivateIpAddressConfigs(java.util.Collection)} or
  {@link #withPrivateIpAddressConfigs(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param privateIpAddressConfigs
  The private IPv4 addresses.
  @return Returns a reference to this object so that method calls can be chained together.