public String getRealm() {
        return this.realm;
    }
<p>
The name of the Kerberos realm to which all nodes in a cluster belong. For example, <code>EC2.INTERNAL</code>.
</p>

@return The name of the Kerberos realm to which all nodes in a cluster belong. For example,
        <code>EC2.INTERNAL</code>.
aws-java-sdk-emr/src/main/java/com/amazonaws/services/elasticmapreduce/model/KerberosAttributes.java