code: function (moreattrs)
      {
          for (var k in moreattrs) {
              if (moreattrs.hasOwnProperty(k)) {
                  this.node.setAttribute(k, moreattrs[k]);
              }
          }
          return this;
      }
docs: Function: attrs
  Add or modify attributes of the current element.
  
  The attributes should be passed in object notation.  This function
  does not move the current element pointer.
  
  Parameters:
  (Object) moreattrs - The attributes to add/modify in object notation.
  
  Returns:
  The Strophe.Builder object.