prepareFullscreenStart = view => {

  const { mainEditor, defaultViewHolder } = env.ref;

  utils.setSidebarTab(mainEditor);

  if (ViewAbstraction.exists(view)) {
    view = new ViewAbstraction(view);
    utils.setField(defaultViewHolder, 'text', view.getLabel());
  }

}
Init the wiki so we can start the main editor with the specified
view in fullscreen mode.

@param {ViewAbstraction|string} view