Create a plot on a Bokeh server then download client side

Question

As the title suggests, I currently have a bokeh webapp that runs in Dataiku, it creates and displays a plot. What I'd like to be able to do is add a download button that sends the HTML file from the server side to the client side (i.e. downloads the HTML of the plot).

I've seen people have managed this with a csv file and an excel file

Unfortunately I don't know any JS so I'm not sure how to adapt this to output an HTML file. I have some code below trying to display where I'm currently at but I know that output_file and save are just being ignored.

import numpy as np
from bokeh.io import curdoc, output_file
from bokeh.layouts import column
from bokeh.models import ColumnDataSource, Button
from bokeh.plotting import figure

# Set up data
N = 200
x = np.linspace(0, 4*np.pi, N)
y = np.sin(x)
source = ColumnDataSource(data=dict(x=x, y=y))


# Set up plot
plot = figure(plot_height=400, plot_width=400, title="my sine wave",
              tools="crosshair,pan,reset,save,wheel_zoom",
              x_range=[0, 4*np.pi], y_range=[-2.5, 2.5], name='my_plot')

plot.line('x', 'y', source=source, line_width=3, line_alpha=0.6)

def download():
    my_plot = curdoc().get_model_by_name('my_plot')
    output_file('myplot.html')
    save(my_plot)

download_button = Button(label="Download plot", width=100, button_type="success")
download_button.on_click(download)


curdoc().add_root(column(plot, download_button))

Create a plot on a Bokeh server then download client side

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