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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_frac_coords_from_lll(self, lll_frac_coords: Vector3Like) -> np.ndarray: """ Given fractional coordinates in the lll basis, returns corresponding fractional coordinates in the lattice basis. """

        return dot(lll_frac_coords, self.lll_mapping)