def METHOD_NAME(self, key_name=None, key_type=Key.KEY_REGULAR_FILE):
    """
    Creates a new key
    :type key_name: string
    :param key_name: The name of the key to create
    :rtype: :class:`boto.file.key.Key`
    :returns: An instance of the newly created key object
    """
    if key_name == '-':
        return Key(self.name, '-', key_type=Key.KEY_STREAM_WRITABLE)
    else:
        dir_name = os.path.dirname(key_name)
        if dir_name and not os.path.exists(dir_name):
            os.makedirs(dir_name)
        fp = open(key_name, 'wb')
        return Key(self.name, key_name, fp)