How to use the svgis.bounding.transform function in svgis

def testTransformBounds(self):
        bounds = (-74, 42, -73, 43)

        with self.assertRaises(TypeError):
            bounding.transform(None, {'init': 'epsg:4269'}, bounds)

        with self.assertRaises(TypeError):
            bounding.transform({'init': 'epsg:4269'}, None, bounds)

        a = bounding.transform({'init': 'epsg:4269'}, {'init': 'epsg:3102'}, bounds)

        fixture = (43332273.50269379, 15584115.894447982, 44004519.424246654, 16320640.928220816)

        for z in zip(a, fixture):
            self.assertAlmostEqual(*z, places=5)

def testTransformBounds(self):
        bounds = (-74, 42, -73, 43)

        with self.assertRaises(TypeError):
            bounding.transform(None, {'init': 'epsg:4269'}, bounds)

        with self.assertRaises(TypeError):
            bounding.transform({'init': 'epsg:4269'}, None, bounds)

        a = bounding.transform({'init': 'epsg:4269'}, {'init': 'epsg:3102'}, bounds)

        fixture = (43332273.50269379, 15584115.894447982, 44004519.424246654, 16320640.928220816)

        for z in zip(a, fixture):
            self.assertAlmostEqual(*z, places=5)

self.log.info('reading %s', layer.name)

                # Set the input CRS, if not yet set.
                self.set_in_crs(layer.crs)

                # When we have passed bounds:
                if unprojected_bounds:
                    # Set the output CRS, if not yet set, using unprojected bounds.
                    self.set_out_crs(unprojected_bounds)

                    # If we haven't set the projected bounds yet, do that.
                    if not self.projected_bounds:
                        self.update_projected_bounds(self.in_crs, self.out_crs, unprojected_bounds, padding)

                    # Convert global bounds to layer.crs.
                    bounds = bounding.transform(self.out_crs, layer.crs, self.projected_bounds)

                # When we have no passed bounds:
                else:
                    # Set the output CRS, if not yet set, using this layer's bounds.
                    self.set_out_crs(layer.bounds)

                    # Extend projection_bounds
                    self.update_projected_bounds(layer.crs, self.out_crs, layer.bounds, padding)
                    bounds = layer.bounds

                kwargs = self._prepare_layer(layer, path, bounds, **kwargs)
                group = tuple(self.feature(f, **kwargs) for _, f in layer.items(bbox=bounds))

        return {
            'members': group,
            'id': kwargs['name'],