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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 load_configuration():
 """Load the configuration"""


    (belbio_conf_fp, belbio_secrets_fp) = get_belbio_conf_files()
    log.info(f"Using conf: {belbio_conf_fp} and secrets files: {belbio_secrets_fp} ")

    config = {}
    if belbio_conf_fp:
        with open(belbio_conf_fp, "r") as f:
            config = yaml.load(f, Loader=yaml.SafeLoader)
            config["source_files"] = {}
            config["source_files"]["conf"] = belbio_conf_fp

    if belbio_secrets_fp:
        with open(belbio_secrets_fp, "r") as f:
            secrets = yaml.load(f, Loader=yaml.SafeLoader)
            config["secrets"] = copy.deepcopy(secrets)
            if "source_files" in config:
                config["source_files"]["secrets"] = belbio_secrets_fp

    get_versions(config)

    # TODO - needs to be completed
    # add_environment_vars(config)

    return config