code: function mergeAncestorData(target, pathArr, type, source) {
      mergeLinked(source, target, _.rest(pathArr), type);
      mergeLinks(source, target , pathArr, type);
    }
docs: Combines the original target resource with the external resource data.
  
  @param {Object} The target resource.
  @param {Object} The include properties.
  @param {Object} The lookup resource type.
  @param {Object} The source from the external lookup.
  @api private