How to use the jupyter-innotater.jupyter_innotater.manager.DataManager function in jupyter-innotater

def __init__(self, inputs, targets, indexes=None, keyboard_shortcuts=True, save_hook=None):

        self.path = ''

        self.dirty_uindexes = set()

        self.save_hook = save_hook

        self.datamanager = DataManager(inputs, targets, indexes)

        slider = IntSlider(min=0, max=0)

        self.slider = slider

        self.prevbtn = Button(description='< Previous')
        self.nextbtn = Button(description='Next >')

        self.input_widgets = [dw.get_widget() for dw in self.datamanager.get_inputs()]
        self.target_widgets = [dw.get_widget() for dw in self.datamanager.get_targets()]

        self.add_class('innotater-base')

        cbar_widgets = [self.prevbtn, slider, self.nextbtn]
        if self.save_hook:
            self.savebtn = Button(description='Save', disabled=True)