code: public DescribeNatGatewaysRequest withNatGatewayIds(String... natGatewayIds) {
          if (this.natGatewayIds == null) {
              setNatGatewayIds(new com.amazonaws.internal.SdkInternalList<String>(natGatewayIds.length));
          }
          for (String ele : natGatewayIds) {
              this.natGatewayIds.add(ele);
          }
          return this;
      }
docs: <p>
  One or more NAT gateway IDs.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setNatGatewayIds(java.util.Collection)} or {@link #withNatGatewayIds(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param natGatewayIds
  One or more NAT gateway IDs.
  @return Returns a reference to this object so that method calls can be chained together.