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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 locus_reads_dataframe(*args, **kwargs):
 """ Traverse a BAM file to find all the reads overlapping a specified locus. Parameters are the same as those for read_locus_generator. """

    df_builder = DataFrameBuilder(
        LocusRead,
        variant_columns=False,
        converters={
            "reference_positions": list_to_string,
            "quality_scores": list_to_string,
        })
    for locus_read in locus_read_generator(*args, **kwargs):
        df_builder.add(variant=None, element=locus_read)
    return df_builder.to_dataframe()