Finalize executes any subclass-specific axes finalization steps.
        The user calls poof and poof calls finalize.

        Parameters
        ----------
        kwargs: generic keyword arguments.

def finalize(self, **kwargs):
        """
        Finalize executes any subclass-specific axes finalization steps.
        The user calls poof and poof calls finalize.

        Parameters
        ----------
        kwargs: generic keyword arguments.

        """
        # Divide out the two features
        feature_one, feature_two = self.features_

        # Set the title
        self.set_title('Scatter Plot: {0} vs {1}'.format(
            str(feature_one), str(feature_two)))
        # Add the legend
        self.ax.legend(loc='best')
        self.ax.set_xlabel(str(feature_one))
        self.ax.set_ylabel(str(feature_two))