Convert the DataFrame to a NumPy array.

        Args:
            dtype: The dtype to pass to numpy.asarray()
            copy: Whether to ensure that the returned value is a not a view on another
                array.

        Returns:
            A numpy array.

def to_numpy(self, dtype=None, copy=False):
        """Convert the DataFrame to a NumPy array.

        Args:
            dtype: The dtype to pass to numpy.asarray()
            copy: Whether to ensure that the returned value is a not a view on another
                array.

        Returns:
            A numpy array.
        """
        return self._default_to_pandas("to_numpy", dtype=dtype, copy=copy)