Is it possible to add in QGIS 3 (Python Script) a help tab on the plugins created for the toolbox as it was in QGIS 2?
Looking in the API I found the parameters helpString that will be deprecated in 3.4, shortHelpString which presents the short help on the right side of the main plugin window, and helpUrl that creates a button with an external link.
Is there any other parameter that enables the use of a help tab?
I would like to create this tab to make it easier to read the plugin's manual even without internet connection and without opening external files. Being able to display a local HTML would be a great option.