code: function fixSignatureParams(node, item, signature) {
    signature.params = [];
    for (var i = 0; i < signature.arity; i++) {
      var paramCopy = _.extend({}, item.params[i]);
      if (node && node.paramTags) {
        if (node.paramTags[paramCopy.name]) {
          _.extend(paramCopy, node.paramTags[paramCopy.name]);
        }
      }
      signature.params.push(paramCopy);
    }
  }
docs: make a set of params to match the signature