public java.util.List<EbsBlockDevice> getEbsBlockDevices() {
        if (ebsBlockDevices == null) {
            ebsBlockDevices = new com.amazonaws.internal.SdkInternalList<EbsBlockDevice>();
        }
        return ebsBlockDevices;
    }
<p>
The EBS block devices that are mapped to this instance group.
</p>

@return The EBS block devices that are mapped to this instance group.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/InstanceGroup.java