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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 _parse_header(line: str) -> Tuple[str, Dict[str, str]]: r"""Parse a Content-type like header. Return the main content-type and a dictionary of options. 'form-data' True 'b\\a"r' """

    parts = _parseparam(";" + line)
    key = next(parts)
    # decode_params treats first argument special, but we already stripped key
    params = [("Dummy", "value")]
    for p in parts:
        i = p.find("=")
        if i >= 0:
            name = p[:i].strip().lower()
            value = p[i + 1 :].strip()
            params.append((name, native_str(value)))
    decoded_params = email.utils.decode_params(params)
    decoded_params.pop(0)  # get rid of the dummy again
    pdict = {}
    for name, decoded_value in decoded_params:
        value = email.utils.collapse_rfc2231_value(decoded_value)
        if len(value) >= 2 and value[0] == '"' and value[-1] == '"':
            value = value[1:-1]
        pdict[name] = value
    return key, pdict