Squared distance between two vectors.
        a and b can be of type SparseVector, DenseVector, np.ndarray
        or array.array.

        >>> a = Vectors.sparse(4, [(0, 1), (3, 4)])
        >>> b = Vectors.dense([2, 5, 4, 1])
        >>> a.squared_distance(b)
        51.0

def squared_distance(v1, v2):
        """
        Squared distance between two vectors.
        a and b can be of type SparseVector, DenseVector, np.ndarray
        or array.array.

        >>> a = Vectors.sparse(4, [(0, 1), (3, 4)])
        >>> b = Vectors.dense([2, 5, 4, 1])
        >>> a.squared_distance(b)
        51.0
        """
        v1, v2 = _convert_to_vector(v1), _convert_to_vector(v2)
        return v1.squared_distance(v2)