public java.util.List<ServiceVolumeConfiguration> getVolumeConfigurations() {
        if (volumeConfigurations == null) {
            volumeConfigurations = new com.amazonaws.internal.SdkInternalList<ServiceVolumeConfiguration>();
        }
        return volumeConfigurations;
    }
<p>
The details of the volume that was <code>configuredAtLaunch</code>. You can configure the size, volumeType, IOPS,
throughput, snapshot and encryption in <a
href="https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ServiceManagedEBSVolumeConfiguration.html"
>ServiceManagedEBSVolumeConfiguration</a>. The <code>name</code> of the volume must match the <code>name</code>
from the task definition. If set to null, no new deployment is triggered. Otherwise, if this configuration
differs from the existing one, it triggers a new deployment.
</p>

@return The details of the volume that was <code>configuredAtLaunch</code>. You can configure the size,
        volumeType, IOPS, throughput, snapshot and encryption in <a href=
        "https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_ServiceManagedEBSVolumeConfiguration.html"
        >ServiceManagedEBSVolumeConfiguration</a>. The <code>name</code> of the volume must match the
        <code>name</code> from the task definition. If set to null, no new deployment is triggered. Otherwise, if
        this configuration differs from the existing one, it triggers a new deployment.
aws-java-sdk-ecs/src/main/java/com/amazonaws/services/ecs/model/UpdateServiceRequest.java