<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def sample(self, bqm, **kwargs):
 """Sample from the problem provided by bqm and truncate output. Args: bqm (:obj:`dimod.BinaryQuadraticModel`):
 Binary quadratic model to be sampled from. **kwargs: Parameters for the sampling method, specified by the child sampler. Returns: :obj:`dimod.SampleSet` """

        tkw = self._truncate_kwargs
        if self._aggregate:
            return self.child.sample(bqm, **kwargs).aggregate().truncate(**tkw)
        else:
            return self.child.sample(bqm, **kwargs).truncate(**tkw)