def METHOD_NAME(eval_metric):
    plt.clf()
    training_plot = seaborn.lineplot(eval_metric)
    fig = training_plot.get_figure()
    buffer = BytesIO()
    fig.savefig(buffer)
    image_data = base64.b64encode(buffer.getvalue())
    return MetadataValue.md(f"![img](data:image/png;base64,{image_data.decode()})")