Where in the documentation is "input_button" described?

I use “config, helpers” to make a button on the front-end to trigger an automation.
However the ‘state’ of the input_button is the time last pressed.

I am curious of my options using a helper button, but I can’t find anything in the docs.

Input_button is not an ESPHome component. It’s a Helper in Home Assistant.

Thanks, that would explain why some of my searches were mysteriously not found.