Property :: relativeCount - Get relative count
The function returns the relative number of instances in a collection with a filter condition or active context filters. The function returns the number of instances, that are available in the reduced collection.
When no filter has been activated, the function returns the same result as count().
When an error has been encountered (e.g. invalid property handle), the function throws an exception.
Return value: Number of items ( int32 )
The value contains the number of items to be processed or stored in a collection.