PropertyDefinition :: collectionSize - Collection size
For collections the property returns the maximum number of instances, which can be stored in a collection. For attributes and base classes, the property has the value one. For attribute arrays the property returns the number of array elements defined for the array.
When the function is called with an invalid property definition, it throws an exception.
Return value: Size ( int32 )
Size of the instance or property area. For string objects, the size is usually measured in units.