How to find count of Leaders added on to 2D component instance

Hi,

I am new to Catia Automation. I am unable to find an API or a way to find the number of Leaders added to a 2D component instance in a view of a cat drawing. 

In catia drawing I have a 2d component instance as shown in image attached. You can also see two leaders added to this instance. Instance represents a part number and count of leaders represents the usage of the part so many times. So count of leaders gives me the number of times the part is used in drawing. Hope my problem at hand is clear. Please feel free to comment if you need more info.

Any help on this will be appreciated!

 

Thanks

Karim