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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 exists_orm(session: Session, ormclass: DeclarativeMeta, *criteria: Any) -> bool: """ Detects whether a database record exists for the specified ``ormclass`` and ``criteria``. Example usage: .. code-block:: python bool_exists = exists_orm(session, MyClass, MyClass.myfield == value) """

    # http://docs.sqlalchemy.org/en/latest/orm/query.html
    q = session.query(ormclass)
    for criterion in criteria:
        q = q.filter(criterion)
    exists_clause = q.exists()
    return bool_from_exists_clause(session=session,
                                   exists_clause=exists_clause)