How to use the httplib2.__init__.FailedToDecompressContent function in httplib2

def _decompressContent(response, new_content):
    content = new_content
    try:
        encoding = response.get('content-encoding', None)
        if encoding in ['gzip', 'deflate']:
            if encoding == 'gzip':
                content = gzip.GzipFile(fileobj=StringIO.StringIO(new_content)).read()
            if encoding == 'deflate':
                content = zlib.decompress(content)
            response['content-length'] = str(len(content))
            # Record the historical presence of the encoding in a way the won't interfere.
            response['-content-encoding'] = response['content-encoding']
            del response['content-encoding']
    except IOError:
        content = ""
        raise FailedToDecompressContent(_("Content purported to be compressed with %s but failed to decompress.") % response.get('content-encoding'), response, content)
    return content

def _decompressContent(response, new_content):
    content = new_content
    try:
        encoding = response.get('content-encoding', None)
        if encoding in ['gzip', 'deflate']:
            if encoding == 'gzip':
                content = gzip.GzipFile(fileobj=StringIO.StringIO(new_content)).read()
            if encoding == 'deflate':
                content = zlib.decompress(content)
            response['content-length'] = str(len(content))
            # Record the historical presence of the encoding in a way the won't interfere.
            response['-content-encoding'] = response['content-encoding']
            del response['content-encoding']
    except IOError:
        content = ""
        raise FailedToDecompressContent(_("Content purported to be compressed with %s but failed to decompress.") % response.get('content-encoding'), response, content)
    return content

def _decompressContent(response, new_content):
    content = new_content
    try:
        encoding = response.get('content-encoding', None)
        if encoding in ['gzip', 'deflate']:
            if encoding == 'gzip':
                content = gzip.GzipFile(fileobj=StringIO.StringIO(new_content)).read()
            if encoding == 'deflate':
                content = zlib.decompress(content)
            response['content-length'] = str(len(content))
            # Record the historical presence of the encoding in a way the won't interfere.
            response['-content-encoding'] = response['content-encoding']
            del response['content-encoding']
    except IOError:
        content = ""
        raise FailedToDecompressContent(_("Content purported to be compressed with %s but failed to decompress.") % response.get('content-encoding'), response, content)
    return content

def _decompressContent(response, new_content):
    content = new_content
    try:
        encoding = response.get('content-encoding', None)
        if encoding in ['gzip', 'deflate']:
            if encoding == 'gzip':
                content = gzip.GzipFile(fileobj=StringIO.StringIO(new_content)).read()
            if encoding == 'deflate':
                content = zlib.decompress(content)
            response['content-length'] = str(len(content))
            # Record the historical presence of the encoding in a way the won't interfere.
            response['-content-encoding'] = response['content-encoding']
            del response['content-encoding']
    except IOError:
        content = ""
        raise FailedToDecompressContent(_("Content purported to be compressed with %s but failed to decompress.") % response.get('content-encoding'), response, content)
    return content

def _decompressContent(response, new_content):
    content = new_content
    try:
        encoding = response.get('content-encoding', None)
        if encoding in ['gzip', 'deflate']:
            if encoding == 'gzip':
                content = gzip.GzipFile(fileobj=StringIO.StringIO(new_content)).read()
            if encoding == 'deflate':
                content = zlib.decompress(content)
            response['content-length'] = str(len(content))
            del response['content-encoding']
    except IOError:
        content = ""
        raise FailedToDecompressContent(
            _("Content purported to be compressed with %s but failed to decompress.") % response.get('content-encoding')
            , response, content)
    return content