How to use the ipyvuetify.Btn function in ipyvuetify

def add_tool(self, tool):
        self.tools[tool.tool_id] = tool
        icon = Image.from_file(icon_path(tool.icon, icon_format='svg'), width=ICON_WIDTH)
        button = v.Btn(v_on="tooltip.on", icon=True, children=[icon], value=tool.tool_id)
        annotated = v.Tooltip(
            bottom=True,
            v_slots=[{
                'name': 'activator',
                'variable': 'tooltip',
                'children': button}],
            children=[tool.tool_tip])
        self.children = list(self.children) + [annotated]

def provider_buttons(providers: List[str]) -> wid.VBox:
    """Generate a collection of provider buttons for a backend.

    When one of these buttons is clicked, the code to get the particular
    provider is copied to the clipboard.

    Args:
        providers: A list of provider names.

    Returns:
        A widget with provider buttons.
    """
    vbox_buttons = []
    for pro in providers:
        button = wid.Box(children=[vue.Btn(color='#f5f5f5', small=True,
                                           children=[pro],
                                           style_="font-family: Arial,"
                                                  "sans-serif; font-size:10px;")],
                         layout=wid.Layout(margin="0px 0px 2px 0px",
                                           width='350px'))

        button.children[0].on_event('click', _copy_text)
        vbox_buttons.append(button)

    return wid.VBox(children=vbox_buttons,
                    layout=wid.Layout(width='350px',
                                      max_width='350px'))

("xor", icon_xor, XorMode),
            ("remove", icon_andnot, AndNotMode),
        ]

        items = []
        for mode in self.modes:
            item = v.ListItem(children=[v.ListItemAction(children=[mode[1]]),
                                        v.ListItemTitle(children=[mode[0]])])
            items.append(item)

        for item in items:
            item.on_event('click', self._sync_state_from_ui)

        mylist = v.List(children=items)

        self.main = v.Btn(icon=True,
                          children=[self.modes[0][1]], v_on="menu.on")

        super().__init__(
            v_slots=[{
                'name': 'activator',
                'variable': 'menu',
                'children': self.main
            }],
            children=[mylist])

        self.session.hub.subscribe(self, msg.EditSubsetMessage,
                                   handler=self._on_edit_subset_msg)

        self._sync_ui_from_state(self.session.edit_subset_mode.mode)