def METHOD_NAME(self, r, Rs, alpha_Rs, r_trunc, e1=1, e2=0):
    """
    :param r: radius (in angular units)
    :param Rs: turn-over radius of NFW profile
    :param alpha_Rs: deflection at Rs
    :param r_trunc: truncation radius
    :param e1: eccentricity component in x-direction
    :param e2: eccentricity component in y-direction
    :return:
    """
    return self.tnfw.METHOD_NAME(r, Rs, alpha_Rs, r_trunc)