code: function buildTypeMethods() {
      extendSimilar(object, false, false, ClassNames, function(methods, name) {
        var method = 'is' + name;
        ObjectTypeMethods.push(method);
        methods[method] = typeChecks[name];
      });
    }
docs: *
  @method Object.is[Type](<obj>)
  @returns Boolean
  @short Returns true if <obj> is an object of that type.
  @extra %isObject% will return false on anything that is not an object literal, including instances of inherited classes. Note also that %isNaN% will ONLY return true if the object IS %NaN%. It does not mean the same as browser native %isNaN%, which returns true for anything that is "not a number".
  
  @set
  isArray
  isObject
  isBoolean
  isDate
  isFunction
  isNaN
  isNumber
  isString
  isRegExp
  
  @example
  
  Object.isArray([1,2,3])            -> true
  Object.isDate(3)                   -> false
  Object.isRegExp(/wasabi/)          -> true
  Object.isObject({ broken:'wear' }) -> true
  
  *