How to access Leap motion's bone direction property within C# script ?

I want to determine the direction of each bone of the index finger. Normally Leap motion C# API has a property called "Direction", which returns the direction of the bone in Vector3 format. But however, I am not not sure how to access this property from within a C# script attached to that bone in Unity.

My objective is similar to accessing any property of the object to which the script is attached.

I am new to Unity and C# programming. Any help in this regard is much appreciated! Thanks