How to use the ipyleaflet.TileLayer function in ipyleaflet

"""
        # Check if layer exists
        if name in self.EELayers.keys():
            if not replace:
                return self.getLayer(name)
            else:
                # Get URL, attribution & vis params
                params = getImageTile(image, visParams, show, opacity)

                # Remove Layer
                self.removeLayer(name)
        else:
            # Get URL, attribution & vis params
            params = getImageTile(image, visParams, show, opacity)

        layer = ipyleaflet.TileLayer(url=params['url'],
                                     attribution=params['attribution'],
                                     name=name)

        EELayer = {'type': 'Image',
                   'object': image,
                   'visParams': params['visParams'],
                   'layer': layer}

        # self._add_EELayer(name, EELayer)
        # return name
        return EELayer

# Check if layer exists
        if thename in self.EELayers.keys():
            if not replace:
                print("{} with name '{}' exists already, please choose another name".format(ty, thename))
                return
            else:
                # Get URL, attribution & vis params
                params = getImageTile(proxy_layer, img_params, show, opacity)

                # Remove Layer
                self.removeLayer(thename)
        else:
            # Get URL, attribution & vis params
            params = getImageTile(proxy_layer, img_params, show, opacity)

        layer = ipyleaflet.TileLayer(url=params['url'],
                                     attribution=params['attribution'],
                                     name=thename)

        self._add_EELayer(thename, {'type': ty,
                                    'object': feature,
                                    'visParams': visParams,
                                    'layer': layer})
        return thename

from ipyleaflet import TileLayer
from traitlets import Unicode
from iclientpy._version import EXTENSION_VERSION


class CloudTileLayer(TileLayer):
    """
    超图云图层
    """
    _view_name = Unicode("SuperMapCloudTileLayerView").tag(sync=True)
    _model_name = Unicode("SuperMapCloudTileLayerModel").tag(sync=True)
    _view_module = Unicode("iclientpy").tag(sync=True)
    _model_module = Unicode("iclientpy").tag(sync=True)
    _view_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)
    _model_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)

    url = Unicode('').tag(sync=True) #:地址
    attribution = Unicode('').tag(sync=True, o=True)#:版权信息
    map_name = Unicode('').tag(sync=True, o=True)#:地图名称
    type = Unicode('').tag(sync=True, o=True)#:地图类型

class CloudTileLayer(TileLayer):
    _view_name = Unicode("SuperMapCloudTileLayerView").tag(sync=True)
    _model_name = Unicode("SuperMapCloudTileLayerModel").tag(sync=True)
    _view_module = Unicode("iclientpy").tag(sync=True)
    _model_module = Unicode("iclientpy").tag(sync=True)
    _view_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)
    _model_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)

    url = Unicode('').tag(sync=True)
    attribution = Unicode('').tag(sync=True, o=True)
    map_name = Unicode('').tag(sync=True, o=True)
    type = Unicode('').tag(sync=True, o=True)


class TileMapLayer(TileLayer):
    _view_name = Unicode("SuperMapTileMapLayerView").tag(sync=True)
    _model_name = Unicode("SuperMapTileMapLayerModel").tag(sync=True)
    _view_module = Unicode("iclientpy").tag(sync=True)
    _model_module = Unicode("iclientpy").tag(sync=True)
    _view_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)
    _model_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)


class RankSymbolThemeLayer(Layer):
    _view_name = Unicode("SuperMapRankSymbolThemeLayerView").tag(sync=True)
    _model_name = Unicode("SuperMapRankSymbolThemeLayerModel").tag(sync=True)
    _view_module = Unicode("iclientpy").tag(sync=True)
    _model_module = Unicode("iclientpy").tag(sync=True)
    _view_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)
    _model_module_version = Unicode(EXTENSION_VERSION).tag(sync=True)

if not replace:
                msg = "Image with name '{}' exists already, please choose " \
                      "another name"
                print(msg.format(name))
                return
            else:
                # Get URL, attribution & vis params
                params = getImageTile(image, visParams, show, opacity)

                # Remove Layer
                self.removeLayer(name)
        else:
            # Get URL, attribution & vis params
            params = getImageTile(image, visParams, show, opacity)

        layer = ipyleaflet.TileLayer(url=params['url'],
                                     attribution=params['attribution'],
                                     name=name)

        EELayer = {'type': 'Image',
                   'object': image,
                   'visParams': params['visParams'],
                   'layer': layer}

        # self._add_EELayer(name, EELayer)
        # return name
        return EELayer

# Check if layer exists
        if thename in self.EELayers.keys():
            if not replace:
                print("{} with name '{}' exists already, please choose another name".format(ty, thename))
                return
            else:
                # Get URL, attribution & vis params
                params = getImageTile(proxy_layer, img_params, show, opacity)

                # Remove Layer
                self.removeLayer(thename)
        else:
            # Get URL, attribution & vis params
            params = getImageTile(proxy_layer, img_params, show, opacity)

        layer = ipyleaflet.TileLayer(url=params['url'],
                                     attribution=params['attribution'],
                                     name=thename)

        self._add_EELayer(thename, {'type': ty,
                                    'object': feature,
                                    'visParams': visParams,
                                    'layer': layer})
        return thename

def addBasemap(self, name, url, **kwargs):
        """ Add a basemap with the given URL """
        layer = ipyleaflet.TileLayer(url=url, name=name, base=True, **kwargs)
        self.add_layer(layer)