code: public  JavaBeanGeneratorCreator<T> fixedProperties(String... fixedPropertyNames)
  	{
  		if(fixedPropertyNames == null || fixedPropertyNames.length == 0)
  		{
  			return this;
  		}
  		
  		HashSet<String> fixSet = new HashSet<>(Arrays.asList(fixedPropertyNames));
  		
  		Map<Object,Object> map = null;
  		
  		if(this.prototype != null)
  		{
  			map  =JavaBean.toMap(this.prototype);
  		}
  		else
  			map = JavaBean.toMap(ClassPath.newInstance(this.creationClass));
  		
  		if(map == null || map.isEmpty())
  			return this;
  		
  		String propertyName = null;
  		for(Object propertyNameObject : map.keySet())
  		{
  			propertyName = String.valueOf(propertyNameObject);
  			if(!fixSet.contains(propertyName))
  			{
  				this.randomizeProperty(propertyName);
  			}
  		}
  		
  		return this;
  	}
docs: Randomized to records that are not in fixed list
  @param fixedPropertyNames the fixed list of property names
  @return the creator factory