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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_miller_index_from_site_indexes(self, site_ids, round_dp=4, verbose=True):
 """ Get the Miller index of a plane from a set of sites indexes. A minimum of 3 sites are required. If more than 3 sites are given the best plane that minimises the distance to all points will be calculated. Args: site_ids (list of int):
 A list of site indexes to consider. A minimum of three site indexes are required. If more than three sites are provided, the best plane that minimises the distance to all sites will be calculated. round_dp (int, optional):
 The number of decimal places to round the miller index to. verbose (bool, optional):
 Whether to print warnings. Returns: (tuple):
 The Miller index. """

        return self.lattice.get_miller_index_from_coords(
            self.frac_coords[site_ids], coords_are_cartesian=False,
            round_dp=round_dp, verbose=verbose)