public void delete(String name) throws IOException {
  if (name.equalsIgnoreCase(QUALIFIERS)) {
    policyQualifiers=Collections.emptySet();
  }
 else   if (name.equalsIgnoreCase(ID)) {
    throw new IOException("Attribute ID may not be deleted from " + "PolicyInformation.");
  }
 else {
    throw new IOException("Attribute name [" + name + "] not recognized by PolicyInformation.");
  }
}

public void delete ( String name ) throws IOException { if ( name . equalsIgnoreCase ( QUALIFIERS ) ) { policyQualifiers = Collections . emptySet ( ) ; } else if ( name . equalsIgnoreCase ( ID ) ) { throw new IOException ( "Attribute ID may not be deleted from " + "PolicyInformation." ) ; } else { throw new IOException ( "Attribute name [" + name + "] not recognized by PolicyInformation." ) ; } }
delete the attribute value .
