code: public DescribeDirectConnectGatewayAssociationsResult withDirectConnectGatewayAssociations(
              DirectConnectGatewayAssociation... directConnectGatewayAssociations) {
          if (this.directConnectGatewayAssociations == null) {
              setDirectConnectGatewayAssociations(new com.amazonaws.internal.SdkInternalList<DirectConnectGatewayAssociation>(
                      directConnectGatewayAssociations.length));
          }
          for (DirectConnectGatewayAssociation ele : directConnectGatewayAssociations) {
              this.directConnectGatewayAssociations.add(ele);
          }
          return this;
      }
docs: <p>
  Information about the associations.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setDirectConnectGatewayAssociations(java.util.Collection)} or
  {@link #withDirectConnectGatewayAssociations(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param directConnectGatewayAssociations
  Information about the associations.
  @return Returns a reference to this object so that method calls can be chained together.