public void setKeytabDescriptor(KerberosKeytabDescriptor keytab) {
    this.keytab = keytab;

    if (this.keytab != null) {
      this.keytab.setParent(this);
    }
  }
Sets the KerberosKeytabDescriptor related to this KerberosIdentityDescriptor

@param keytab the KerberosKeytabDescriptor related to this KerberosIdentityDescriptor
ambari-server/src/main/java/org/apache/ambari/server/state/kerberos/KerberosIdentityDescriptor.java