def pop_valuesets(spark_session):
    """
    Pops the current valuesets from the stack, returning true if there remains
    an active valueset, or false otherwise.

    :param spark_session: the SparkSession instance
    """
    jvm = spark_session._jvm

    return jvm.com.cerner.bunsen.ValueSetUdfs.popUdf(spark_session._jsparkSession)