Return error on Get(*Key).

service/datastore/datastore.go

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package datastore
 
 import (
         "fmt"
         "reflect"
 
@@ skipping 201 matching lines @@
                         for i, e := range errs {
                                 me[i] = e
                         }
                         err = me
                 }
         }
         return err
 }
 
 func isOkType(v reflect.Type) bool {
+        if v == typeOfKey {
+                return false
+        }
         if v.Implements(typeOfPropertyLoadSaver) {
                 return true
         }
         if v.Kind() == reflect.Ptr && v.Elem().Kind() == reflect.Struct {
                 return true
         }
         return false
 }
 
 func (d *datastoreImpl) ExistsMulti(keys []*Key) ([]bool, error) {
@@ skipping 101 matching lines @@
         err = lme.Get()
         if err == nil {
                 err = extErr
         }
         return
 }
 
 func (d *datastoreImpl) Raw() RawInterface {
         return d.RawInterface
 }