The button action type, like 'Save'
The classes to apply to the button, like 'secondary'
The html id of the button
If true, the button is disabled in the action bar
The text displayed on the button
The onBuild handler to fire when the form loads each time. Return false to not show the button.
The onClick handler to fire when a user clicks on the button
The order of the buttons from left to right
The slot position of the button in the action bar
The modes to display the button in the action bar
Settings for a custom button in the action bar