public void addAuthPolicy(String policyUri){
  String policies=getAuthPolicies();
  if (policies == null || AUTH_POLICY_NONE.equals(policies))   setAuthPolicies(policyUri);
 else   setAuthPolicies(policies + " " + policyUri);
}

public void addAuthPolicy ( String policyUri ) { String policies = getAuthPolicies ( ) ; if ( policies == null || AUTH_POLICY_NONE . equals ( policies ) ) setAuthPolicies ( policyUri ) ; else setAuthPolicies ( policies + " " + policyUri ) ; }
adds an authentication policy uri to the auth_policies parameter .
