Display search dialog with our own function call?

Hi everyone - I migrated to the latest version of DocSearch, and one thing I'm not a fan of is the initial 29kb load even if a user isn't actively planning on using search. Is there a way to defer loading of the library by having the search field be invoked via a custom DOM element? I can dynamically load the docsearch script and any initialization code, but I don't know what method to invoke to display the search dialog.

Thanks,
Kirupa

The issue names the DocSearch script, initialization code, and a custom DOM element; start by reviewing the public initialization and search-field integration APIs. Determine whether a supported function can open the dialog after deferred loading, and make the supported entry point or usage guidance clear.

Written by the indexing model from the issue text.