Convenience method for projection of a tensor into a
        vector.  Returns the tensor dotted into a unit vector
        along the input n.

        Args:
            n (3x1 array-like): direction to project onto

        Returns (float):
            scalar value corresponding to the projection of
            the tensor into the vector

def project(self, n):
        """
        Convenience method for projection of a tensor into a
        vector.  Returns the tensor dotted into a unit vector
        along the input n.

        Args:
            n (3x1 array-like): direction to project onto

        Returns (float):
            scalar value corresponding to the projection of
            the tensor into the vector

        """
        n = get_uvec(n)
        return self.einsum_sequence([n] * self.rank)