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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 dumps(obj, big_endian=True):
 """ Dump a GeoJSON-like `dict` to a WKB string. .. note:: The dimensions of the generated WKB will be inferred from the first vertex in the GeoJSON `coordinates`. It will be assumed that all vertices are uniform. There are 4 types: - 2D (X, Y):
 2-dimensional geometry - Z (X, Y, Z):
 3-dimensional geometry - M (X, Y, M):
 2-dimensional geometry with a "Measure" - ZM (X, Y, Z, M):
 3-dimensional geometry with a "Measure" If the first vertex contains 2 values, we assume a 2D geometry. If the first vertex contains 3 values, this is slightly ambiguous and so the most common case is chosen: Z. If the first vertex contains 4 values, we assume a ZM geometry. The WKT/WKB standards provide a way of differentiating normal (2D), Z, M, and ZM geometries (http://en.wikipedia.org/wiki/Well-known_text), but the GeoJSON spec does not. Therefore, for the sake of interface simplicity, we assume that geometry that looks 3D contains XYZ components, instead of XYM. If the coordinates list has no coordinate values (this includes nested lists, for example, `[[[[],[]], []]]`, the geometry is considered to be empty. Geometries, with the exception of points, have a reasonable "empty" representation in WKB; however, without knowing the number of coordinate values per vertex, the type is ambigious, and thus we don't know if the geometry type is 2D, Z, M, or ZM. Therefore in this case we expect a `ValueError` to be raised. :param dict obj: GeoJson-like `dict` object. :param bool big_endian: Defaults to `True`. If `True`, data values in the generated WKB will be represented using big endian byte order. Else, little endian. TODO: remove this :param str dims: Indicates to WKB representation desired from converting the given GeoJSON `dict` ``obj``. The accepted values are: * '2D': 2-dimensional geometry (X, Y) * 'Z': 3-dimensional geometry (X, Y, Z) * 'M': 3-dimensional geometry (X, Y, M) * 'ZM': 4-dimensional geometry (X, Y, Z, M) :returns: A WKB binary string representing of the ``obj``. """

    geom_type = obj['type']
    meta = obj.get('meta', {})

    exporter = _dumps_registry.get(geom_type)
    if exporter is None:
        _unsupported_geom_type(geom_type)

    # Check for empty geometries. GeometryCollections have a slightly different
    # JSON/dict structure, but that's handled.
    coords_or_geoms = obj.get('coordinates', obj.get('geometries'))
    if len(list(flatten_multi_dim(coords_or_geoms))) == 0:
        raise ValueError(
            'Empty geometries cannot be represented in WKB. Reason: The '
            'dimensionality of the WKB would be ambiguous.'
        )

    return exporter(obj, big_endian, meta)