public void setIdentities(List<KerberosIdentityDescriptor> identities) {
    this.identities = (identities == null)
        ? null
        : new ArrayList<>(identities);
  }
Set the {@link KerberosIdentityDescriptor} for this {@link AbstractKerberosDescriptorContainer}.

@param identities a {@link List} of {@link KerberosIdentityDescriptor}s
ambari-server/src/main/java/org/apache/ambari/server/state/kerberos/AbstractKerberosDescriptorContainer.java