Make the rest of the services have a similar raw/user interface structure.

service/taskqueue/types.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.
 
 // This file contains types which are mirrors/duplicates of the upstream SDK
 // types. This exists so that users can depend solely on this wrapper library
 // without necessarially needing an SDK implementation present.
 //
 // This was done (instead of type-aliasing from the github version of the SDK)
 // because some of the types need to be tweaked (like Task.RetryOptions) to
@@ skipping 79 matching lines @@
 
         // The number of times the task has been dispatched or leased.
         RetryCount int32
 
         // Tag for the task. Only used when Method is PULL.
         Tag string
 
         // Retry options for this task. May be nil.
         RetryOptions *RetryOptions
 }
+
+func (t *Task) Duplicate() *Task {
+        ret := *t
+
+        if len(t.Header) > 0 {
+                ret.Header = make(http.Header, len(t.Header))
+                for k, vs := range t.Header {
+                        newVs := make([]string, len(vs))
+                        copy(newVs, vs)
+                        ret.Header[k] = newVs
+                }
+        }
+
+        if len(t.Payload) > 0 {
+                ret.Payload = make([]byte, len(t.Payload))
+                copy(ret.Payload, t.Payload)
+        }
+
+        if t.RetryOptions != nil {
+                ret.RetryOptions = &RetryOptions{}
+                *ret.RetryOptions = *t.RetryOptions
+        }
+
+        return &ret
+}