public void setGreengrassGroupId(String greengrassGroupId) {
        this.greengrassGroupId = greengrassGroupId;
    }
<p>
The ID of the Greengrass group where the system instance is deployed.
</p>

@param greengrassGroupId
       The ID of the Greengrass group where the system instance is deployed.
aws-java-sdk-iotthingsgraph/src/main/java/com/amazonaws/services/iotthingsgraph/model/SystemInstanceSummary.java