TypeDefinition :: attributeCount - Number of attributes
The property returns the number of attributes for a complex data type. The count does not include the number of attributes defined in base types of the complex data type.
When calling the function with an invalid type definition or when the type definition does not refer to a complex data type, 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.