public CreateDirectConnectGatewayAssociationProposalRequest withGatewayId(String gatewayId) {
        setGatewayId(gatewayId);
        return this;
    }
<p>
The ID of the virtual private gateway or transit gateway.
</p>

@param gatewayId
       The ID of the virtual private gateway or transit gateway.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-directconnect/src/main/java/com/amazonaws/services/directconnect/model/CreateDirectConnectGatewayAssociationProposalRequest.java