human
Complete the below
def imview_async(*args, **kwargs):

    ''''A version of `imview` that forks a separate process and
    immediately shows the image.
    Parameters
    window_title : str
    TODO: writeme with decorators to inherit the other imviews\'
    docstrings
    Notes
    Supports the `window_title` keyword argument to cope with
    the title always being \'Figure 1\'.
    Returns the `multiprocessing.Process` handle.'
    '''

Give me a the Python code you requested?
assistant
#Here is the Python code you requested.
    if ('figure' in kwargs):
        raise ValueError('passing    a    figure    argument    not    supported')
    def fork_image_viewer():
        f = plt.figure()
        kwargs['figure'] = f
        imview(*args, **kwargs)
        if ('window_title' in kwargs):
            f.set_window_title(kwargs['window_title'])
        plt.show()
    p = Process(None, fork_image_viewer)
    p.start()
    return p