public String getResourceGroupArn() {
        return this.resourceGroupArn;
    }
<p>
The <a href="https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html">Amazon Resource Name
(ARN)</a> of the resource group. This value is available only if the resource is part of a resource group.
</p>

@return The <a href="https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html">Amazon Resource
        Name (ARN)</a> of the resource group. This value is available only if the resource is part of a resource
        group.
aws-java-sdk-ram/src/main/java/com/amazonaws/services/ram/model/Resource.java