Whether the editor should be initially disabled.
Each of these functions will be called on click, input, and keyup. No arguments will be passed.
This is separate from inputListeners since the full serialized content will be passed to it. It is considered private API, and should not be used/modified by extensions not implementing EditorDriverInterface.
This function will be called if submission is triggered programmatically via keybind. No arguments should be passed.
An optional placeholder for the editor.
An optional initial value for the editor.
An array of HTML class names to apply to the editor's main DOM element.