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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def accept(self):
 """Process the layer for multi buffering and generate a new layer. .. note:: This is called on OK click. """

        # set parameter from dialog
        input_layer = self.layer.currentLayer()
        output_path = self.output_form.text()
        radius = self.get_classification()
        # monkey patch keywords so layer works on multi buffering function
        input_layer.keywords = {'inasafe_fields': {}}

        # run multi buffering
        self.output_layer = multi_buffering(input_layer, radius)

        # save output layer to data store and check whether user
        # provide the output path.
        if output_path:
            self.output_directory, self.output_filename = (
                os.path.split(output_path))
            self.output_filename, self.output_extension = (
                os.path.splitext(self.output_filename))

        # if user do not provide the output path, create a temporary file.
        else:
            self.output_directory = temp_dir(sub_dir='work')
            self.output_filename = (
                unique_filename(
                    prefix='hazard_layer',
                    suffix='.geojson',
                    dir=self.output_directory))
            self.output_filename = os.path.split(self.output_filename)[1]
            self.output_filename, self.output_extension = (
                os.path.splitext(self.output_filename))

        self.data_store = Folder(self.output_directory)
        if self.output_extension == '.shp':
            self.data_store.default_vector_format = 'shp'
        elif self.output_extension == '.geojson':
            self.data_store.default_vector_format = 'geojson'
        self.data_store.add_layer(self.output_layer, self.output_filename)

        # add output layer to map canvas
        self.output_layer = self.data_store.layer(self.output_filename)

        QgsProject.instance().addMapLayers(
            [self.output_layer])
        self.iface.setActiveLayer(self.output_layer)
        self.iface.zoomToActiveLayer()
        self.done(QtWidgets.QDialog.Accepted)

        if self.keyword_wizard_checkbox.isChecked():
            self.launch_keyword_wizard()