Return a list of GeoJSON FeatureCollections, one for each folder in the given KML DOM node that contains geodata.
    Name each FeatureCollection (via a ``'name'`` attribute) according to its corresponding KML folder name.

    If ``disambiguate_names == True``, then disambiguate repeated layer names via :func:`disambiguate`.

    Warning: this can produce layers with the same geodata in case the KML node has nested folders with geodata.

def build_layers(node, disambiguate_names=True):
    """
    Return a list of GeoJSON FeatureCollections, one for each folder in the given KML DOM node that contains geodata.
    Name each FeatureCollection (via a ``'name'`` attribute) according to its corresponding KML folder name.

    If ``disambiguate_names == True``, then disambiguate repeated layer names via :func:`disambiguate`.

    Warning: this can produce layers with the same geodata in case the KML node has nested folders with geodata.
    """
    layers = []
    names = []
    for i, folder in enumerate(get(node, 'Folder')):
        name = val(get1(folder, 'name'))
        geojson = build_feature_collection(folder, name)
        if geojson['features']:
            layers.append(geojson)
            names.append(name)

    if not layers:
        # No folders, so use the root node
        name = val(get1(node, 'name'))
        geojson = build_feature_collection(node, name)
        if geojson['features']:
            layers.append(geojson)
            names.append(name)

    if disambiguate_names:
        new_names = disambiguate(names)
        new_layers = []
        for i, layer in enumerate(layers):
            layer['name'] = new_names[i]
            new_layers.append(layer)
        layers = new_layers

    return layers