Given the primitive index in this mesh (e.g. the first, second, third triangle, and so on), return an index array of their vertex information. Supports all the PrimitiveTypes (so triangles will return 3 points and lines 2 points), as well as indexed/non-indexed vertex buffers. Note, if short indices are used they will be returned as Int32's.

public void GetPrimitiveIndices(
	int primitiveIndex,
	int[] store
)