code: def sample(self,
                 qubits: List[ops.Qid],
                 repetitions: int = 1) -> np.ndarray:
          
          raise NotImplementedError()
docs: Samples from the system at this point in the computation.
  
          Note that this does not collapse the wave function.
  
          Args:
              qubits: The qubits to be sampled in an order that influence the
                  returned measurement results.
              repetitions: The number of samples to take.
  
          Returns:
              Measurement results with True corresponding to the ``|1⟩`` state.
              The outer list is for repetitions, and the inner corresponds to
              measurements ordered by the supplied qubits. These lists
              are wrapped as an numpy ndarray.