code: def single_qubit_matrix_to_gates(
          mat: np.ndarray, tolerance: float = 0
  ) -> List[ops.SingleQubitGate]:
      
      rotations = single_qubit_matrix_to_pauli_rotations(mat, tolerance)
      return [cast(ops.SingleQubitGate, pauli)**ht for pauli, ht in rotations]
docs: Implements a single-qubit operation with few gates.
  
      Args:
          mat: The 2x2 unitary matrix of the operation to implement.
          tolerance: A limit on the amount of error introduced by the
              construction.
  
      Returns:
          A list of gates that, when applied in order, perform the desired
              operation.