def METHOD_NAME(self) -> 'cirq.Sampler':
    """Return a local `cirq.Sampler` based on the `noise_strength` attribute.
    If `self.noise_strength` is `0` return a noiseless state-vector simulator.
    If it's set to `float('inf')` the simulator will be `cirq.ZerosSampler`.
    Otherwise, we return a density matrix simulator with a depolarizing model with
    `noise_strength` probability of noise.
    This function is used to initialize this class's `processor`.
    """
    if self.noise_strength == 0:
        return cirq.Simulator()
    if self.noise_strength == float('inf'):
        return cirq.ZerosSampler()
    return cirq.DensityMatrixSimulator(
        noise=cirq.ConstantQubitNoiseModel(cirq.depolarize(p=self.noise_strength))
    )