
def download_ld_matrix(target_dir='.', chromosome=None):
    """
    Download LD matrices for VIPRS software.

    TODO: Update this once data is made available.

    :param target_dir: The path or directory where to store the LD matrix
    :param chromosome: An integer or list of integers with the chromosome numbers for which to download
    the LD matrices from Zenodo.
    """

    raise NotImplementedError("This function is not yet implemented.")
