code: function addonsManager_getViews(aSpec) {
      var spec = aSpec || { };
      var attribute = spec.attribute;
      var value = spec.value;
  
      return this.getElements({type: "views", subtype: attribute, value: value});
    }
docs: ///////////////////////////// View section ///////////////////////////// 
  Returns the views which match the filter criteria
  
  @param {object} aSpec
  Information for getting the views matched by the criteria
  Elements: attribute - DOM attribute of the node
  [optional - default: ""]
  value     - Value of the DOM attribute
  [optional - default: ""]
  
  @returns Filtered list of views
  @type {array of ElemBase}