public void removeContextDataFactory(ContextDataFactory contextDataFactory){
  if (contextDataFactory == null) {
    throw new IllegalArgumentException("Parameter contextDataFactory must not be null.");
  }
  contextDataFactories.remove(contextDataFactory);
}

public void removeContextDataFactory ( ContextDataFactory contextDataFactory ) { if ( contextDataFactory == null ) { throw new IllegalArgumentException ( "Parameter contextDataFactory must not be null." ) ; } contextDataFactories . remove ( contextDataFactory ) ; }
removes the given context data factory from the model .
