drupal/core/modules/outside_in/outside_in.routing.yml

entity.block.offcanvas_form:
  path: '/admin/structure/block/manage/{block}/offcanvas'
  defaults:
    _entity_form: 'block.offcanvas'
    _title: 'Configure block'
  requirements:
    _permission: 'administer blocks'
Issue #2753941 by tedbow, tim.plunkett, tkoleary, SKAUGHT, drpal, effulgentsia, andrewmacpherson, webchick, xjm, Bojhan, Gábor Hojtsy, Wim Leers, catch, nod_: [Experimental] Create Outside In module MVP to provide block configuration in Off-Canvas tray and expand site edit mode 2016-08-17 10:59:07 +00:00			`entity.block.offcanvas_form:`
			`path: '/admin/structure/block/manage/{block}/offcanvas'`
			`defaults:`
			`_entity_form: 'block.offcanvas'`
			`_title: 'Configure block'`
			`requirements:`
			`_permission: 'administer blocks'`