public boolean hasKeyPurposeId(KeyPurposeId keyPurposeId){
  return (usageTable.get(keyPurposeId) != null);
}

public boolean hasKeyPurposeId ( KeyPurposeId keyPurposeId ) { return ( usageTable . get ( keyPurposeId ) != null ) ; }
return true if this extendedkeyusage object contains the passed in keypurposeid .
