Example on how to pass a python object into ReactWidget

I have a python object of type fig.
This fig is used to initialize the ReactWidget.
In the init function, the figure is processed to a string and then later used in the my_message traitlet.

Here is an example on how I would do that:
Question: is this a best practice solution that we could provide in the docs like this?

import matplotlib.pyplot as plt
fig, ax = plt.subplots(figsize=(6, 2))
ax.plot([1,2], [10,20], c = "orange");

###

import ipyreact
from traitlets import Unicode

class TldrawWidget(ipyreact.ReactWidget):
    def __init__(self,my_figure= None, **kwargs):

        my_str = f"the size of the figure is {my_figure.get_size_inches()}"

        super().__init__(**kwargs, my_message=my_str)

    my_message = Unicode("").tag(sync=True) 
    _esm = """
    import * as React from "react";

    export default function MyButton({my_message}) {
        return < button > {my_message} < /button> 
    };"""

TldrawWidget(my_figure=fig)

Start by reviewing the proposed Python example and how it initializes ipyreact.ReactWidget with a traitlets Unicode value. Check the existing project documentation for related ReactWidget guidance, then determine whether this example is the recommended pattern and document the agreed approach if confirmed.