docs: public void show(JcrNode node) {
          this.node = node;
          if (node.getAcl() == null) {
              this.displayDisabledEditor();
          } else if (this.isAclDefined(node)) {
              this.selectFirstPrincipalAndDisplayPermissions(node);
          } else {
              this.displayEveryonePermissions();
          }
      }