def records(self) -> Mapping[str, np.ndarray]:
        """A mapping from measurement key to measurement records.

        The value for each key is a 3-D array of booleans, with the first index
        running over circuit repetitions, the second index running over instances
        of the measurement key in the circuit, and the third index running over
        the qubits for the corresponding measurements.
        """
A mapping from measurement key to measurement records.

        The value for each key is a 3-D array of booleans, with the first index
        running over circuit repetitions, the second index running over instances
        of the measurement key in the circuit, and the third index running over
        the qubits for the corresponding measurements.
        
cirq-core/cirq/study/result.py