code: private void countPropertyReference(PropertyIdValue property, int count) {
  		PropertyRecord propertyRecord = getPropertyRecord(property);
  		propertyRecord.referenceCount = propertyRecord.referenceCount + count;
  	}
docs: Counts additional occurrences of a property as property in references.
  
  @param property
  the property to count
  @param count
  the number of times to count the property