This wraps the ObjectARX AcDbVertexRef::AcDbVertexRef() method.

Public Sub New(
    compoundObjectId As CompoundObjectId, 
    subentId As SubentityId, 
    point As Point3d
)

public VertexRef(
    CompoundObjectId compoundObjectId, 
    SubentityId subentId, 
    Point3d point
);