<div ng-if="!isArray(item.left)">
    <div ng-repeat="item in [item.left]" ng-include="'Views/pane.html'">
    </div>
</div>
<div ng-if="isArray(item.left)">
    {{item.left[0]}}
</div>
<div ng-if="!isArray(item.right)">
    <div ng-repeat="item in [item.right]" ng-include="'Views/pane.html'">
    </div>
</div>
<div ng-if="isArray(item.right)">
    {{item.right[0]}}
</div>

<div ng-if="!isArray(item.left)">
    <div ng-init = "item = item.left" ng-include="'Views/pane.html'">
    </div>
</div>
<div ng-if="isArray(item.left)">
    {{item.left[0]}}
</div>
<div ng-if="!isArray(item.right)">
    <div ng-init="item = item.right" ng-include="'Views/pane.html'">
    </div>
</div>
<div ng-if="isArray(item.right)">
    {{item.right[0]}}
</div>

var app = angular.module('mycontrollers', []);

app.controller('MainCtrl', function ($scope) {

    $scope.tree = {
        left: {
            left: ["leftleft"],
            right: {
                left: ["leftrightleft"],
                right: ["leftrightright"]
            }
        },
        right: {
            left: ["rightleft"],
            right: ["rightright"]
        }
    };

    $scope.isArray = function (item) {
        return Array.isArray(item);
    }
});

$scope.item = $scope.item.left

<script type="text/ng-template"  id="tree_item_renderer">
        <ul class="some" ng-show="data.show">
          <li ng-repeat="data in data.nodes" class="parent_li"  ng-include="'tree_item_renderer'" tree-node></li>
        </ul>
  </script>


<ul>
  <li ng-repeat="data in displayTree"  ng-include="'tree_item_renderer'"></li>

<div ng-repeat="pass in [{'text':'hello'}]" ng-include="'includepage.html'"></div>

<p>{{pass.text}}</p>