def METHOD_NAME(opt: Opt) -> str:
    """
    Set the mutators appropriately for the memory decision tasks.
    """
    mutators = '+'.join(
        [
            'memory_decision_mutator',
            'skip_retrieval_mutator',
            'prompt_memory_decision_mutator',
        ]
    )
    if opt.get('mutators'):
        mutators = '+'.join([mutators, opt['mutators']])
    logging.warning(f'overriding mutators to {mutators}')
    return mutators