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