public String getDataEncryptionKeyId() {
        return this.dataEncryptionKeyId;
    }
<p>
The data encryption key identifier for the snapshot. This value is a unique identifier that corresponds to the
data encryption key that was used to encrypt the original volume or snapshot copy. Because data encryption keys
are inherited by volumes created from snapshots, and vice versa, if snapshots share the same data encryption key
identifier, then they belong to the same volume/snapshot lineage. This parameter is only returned by
<a>DescribeSnapshots</a>.
</p>

@return The data encryption key identifier for the snapshot. This value is a unique identifier that corresponds
        to the data encryption key that was used to encrypt the original volume or snapshot copy. Because data
        encryption keys are inherited by volumes created from snapshots, and vice versa, if snapshots share the
        same data encryption key identifier, then they belong to the same volume/snapshot lineage. This parameter
        is only returned by <a>DescribeSnapshots</a>.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/Snapshot.java