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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 image_to_base64(image):
 """ Convert a matplotlib image to a base64 png representation Parameters image : matplotlib image object The image to be converted. Returns ------- image_base64 : string The UTF8-encoded base64 string representation of the png image. """

    ax = image.axes
    binary_buffer = io.BytesIO()

    # image is saved in axes coordinates: we need to temporarily
    # set the correct limits to get the correct image
    lim = ax.axis()
    ax.axis(image.get_extent())
    image.write_png(binary_buffer)
    ax.axis(lim)

    binary_buffer.seek(0)
    return base64.b64encode(binary_buffer.read()).decode('utf-8')