`google.colab.enable_custom_widget_manager()` doesn't work

[simonrouse9461]

The following snippet does not work:

from google.colab import output
output.enable_custom_widget_manager()

It raises this error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In [6], line 2
      1 from google.colab import output
----> 2 output.enable_custom_widget_manager()

AttributeError: module 'google.colab.output' has no attribute 'enable_custom_widget_manager'

This doesn't happen in regular Colab notebook.