def _is_quoted(string):
    """
    Returns whether the given string is quoted inside of a content disposition parameter.
    
    Parameters
    ----------
    string : `str`
        The string to check.

    Returns
    -------
    is_quoted : `bool`
    """
    if (len(string) > 1) and (string[0] == '"') and (string[-1] == '"'):
        return True
    
    return False