text: var CoreView = require('backbone/core-view');
  var EditFeatureGeometryFormView = require('./edit-feature-geometry-form-view');
  var EditFeatureAttributesFormView = require('./edit-feature-attributes-form-view');
  
  module.exports = CoreView.extend({
  
    initialize: function (opts) {
      if (!opts.featureModel) throw new Error('featureModel is required');
      if (!opts.geometryFormModel) throw new Error('geometryFormModel is required');
      if (!opts.attributesFormModel) throw new Error('attributesFormModel is required');
  
      this._featureModel = opts.featureModel;
      this._geometryFormModel = opts.geometryFormModel;
      this._attributesFormModel = opts.attributesFormModel;
    },
  
    render: function () {
      if (this._editFeatureGeometryFormView) {
        this._editFeatureGeometryFormView.clean();
      }
  
      if (this._editFeatureAttributesFormView) {
        this._editFeatureAttributesFormView.clean();
      }
  
      this.clearSubViews();
  
      this.$el.empty();
  
      this._editFeatureGeometryFormView = new EditFeatureGeometryFormView({
        model: this._geometryFormModel
      });
  
      this.addView(this._editFeatureGeometryFormView);
      this.$el.append(this._editFeatureGeometryFormView.render().el);
  
      this._editFeatureAttributesFormView = new EditFeatureAttributesFormView({
        model: this._attributesFormModel
      });
  
      this.addView(this._editFeatureAttributesFormView);
      this.$el.append(this._editFeatureAttributesFormView.render().el);
  
      return this;
    }
  
  });
  