get all ensemble structural BED file calls, skipping any normal samples from
    tumor/normal calls

def _get_ensemble_bed_files(items):
    """
    get all ensemble structural BED file calls, skipping any normal samples from
    tumor/normal calls
    """
    bed_files = []
    for data in items:
        for sv in data.get("sv", []):
            if sv["variantcaller"] == "sv-ensemble":
                if ("vrn_file" in sv and not vcfutils.get_paired_phenotype(data) == "normal"
                      and file_exists(sv["vrn_file"])):
                    bed_files.append(sv["vrn_file"])
    return bed_files