You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: admJacRev.m
    path of file: ./repos/d2d/arFramework3/ThirdParty/StrucID/adimat/foderivclass_cell
    
    the code of the file until where you have to start completion: % function Jac = admJacRev(varargin
    
function Jac = admJacRev(varargin)
%
% This file is part of the ADiMat runtime environment, and belongs
% to the opt_derivclass derivative class.
%
% Copyright 2009,2010 Johannes Willkomm, Institute for Scientific Computing
% Copyright 2001-2009 Andre Vehreschild, Institute for Scientific Computing
%                     RWTH Aachen University
function Jac = admJacRev(varargin)
  nCompInArgs = 0;
  for i=1:nargin
    nCompInArgs = nCompInArgs + prod(size(varargin{i}));
  end