whole_func_string: function thisToArgs(that, args) {
    args = Array.prototype.slice.call(args, 0);
    args.unshift(that);
    return args;
  }
func_code_string: function thisToArgs(that, args) {
    args = Array.prototype.slice.call(args, 0);
    args.unshift(that);
    return args;
  }
func_documentation_string: Helper to use Function.prototype.call and prepend this to arguments
  
  @param that
  @param args
  @returns {Array}