Making server action result types more consistent
diff --git a/_site/openstack/identity/v2/extensions/delegate.go b/_site/openstack/identity/v2/extensions/delegate.go
new file mode 100644
index 0000000..cee275f
--- /dev/null
+++ b/_site/openstack/identity/v2/extensions/delegate.go
@@ -0,0 +1,52 @@
+package extensions
+
+import (
+	"github.com/mitchellh/mapstructure"
+	"github.com/rackspace/gophercloud"
+	common "github.com/rackspace/gophercloud/openstack/common/extensions"
+	"github.com/rackspace/gophercloud/pagination"
+)
+
+// ExtensionPage is a single page of Extension results.
+type ExtensionPage struct {
+	common.ExtensionPage
+}
+
+// IsEmpty returns true if the current page contains at least one Extension.
+func (page ExtensionPage) IsEmpty() (bool, error) {
+	is, err := ExtractExtensions(page)
+	if err != nil {
+		return true, err
+	}
+	return len(is) == 0, nil
+}
+
+// ExtractExtensions accepts a Page struct, specifically an ExtensionPage struct, and extracts the
+// elements into a slice of Extension structs.
+func ExtractExtensions(page pagination.Page) ([]common.Extension, error) {
+	// Identity v2 adds an intermediate "values" object.
+
+	var resp struct {
+		Extensions struct {
+			Values []common.Extension `mapstructure:"values"`
+		} `mapstructure:"extensions"`
+	}
+
+	err := mapstructure.Decode(page.(ExtensionPage).Body, &resp)
+	return resp.Extensions.Values, err
+}
+
+// Get retrieves information for a specific extension using its alias.
+func Get(c *gophercloud.ServiceClient, alias string) common.GetResult {
+	return common.Get(c, alias)
+}
+
+// List returns a Pager which allows you to iterate over the full collection of extensions.
+// It does not accept query parameters.
+func List(c *gophercloud.ServiceClient) pagination.Pager {
+	return common.List(c).WithPageCreator(func(r pagination.LastHTTPResponse) pagination.Page {
+		return ExtensionPage{
+			ExtensionPage: common.ExtensionPage{SinglePageBase: pagination.SinglePageBase(r)},
+		}
+	})
+}
diff --git a/_site/openstack/identity/v2/extensions/delegate_test.go b/_site/openstack/identity/v2/extensions/delegate_test.go
new file mode 100644
index 0000000..504118a
--- /dev/null
+++ b/_site/openstack/identity/v2/extensions/delegate_test.go
@@ -0,0 +1,38 @@
+package extensions
+
+import (
+	"testing"
+
+	common "github.com/rackspace/gophercloud/openstack/common/extensions"
+	"github.com/rackspace/gophercloud/pagination"
+	th "github.com/rackspace/gophercloud/testhelper"
+	"github.com/rackspace/gophercloud/testhelper/client"
+)
+
+func TestList(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+	HandleListExtensionsSuccessfully(t)
+
+	count := 0
+	err := List(client.ServiceClient()).EachPage(func(page pagination.Page) (bool, error) {
+		count++
+		actual, err := ExtractExtensions(page)
+		th.AssertNoErr(t, err)
+		th.CheckDeepEquals(t, common.ExpectedExtensions, actual)
+
+		return true, nil
+	})
+	th.AssertNoErr(t, err)
+	th.CheckEquals(t, 1, count)
+}
+
+func TestGet(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+	common.HandleGetExtensionSuccessfully(t)
+
+	actual, err := Get(client.ServiceClient(), "agent").Extract()
+	th.AssertNoErr(t, err)
+	th.CheckDeepEquals(t, common.SingleExtension, actual)
+}
diff --git a/_site/openstack/identity/v2/extensions/fixtures.go b/_site/openstack/identity/v2/extensions/fixtures.go
new file mode 100644
index 0000000..96cb7d2
--- /dev/null
+++ b/_site/openstack/identity/v2/extensions/fixtures.go
@@ -0,0 +1,60 @@
+// +build fixtures
+
+package extensions
+
+import (
+	"fmt"
+	"net/http"
+	"testing"
+
+	th "github.com/rackspace/gophercloud/testhelper"
+	"github.com/rackspace/gophercloud/testhelper/client"
+)
+
+// ListOutput provides a single Extension result. It differs from the delegated implementation
+// by the introduction of an intermediate "values" member.
+const ListOutput = `
+{
+	"extensions": {
+		"values": [
+			{
+				"updated": "2013-01-20T00:00:00-00:00",
+				"name": "Neutron Service Type Management",
+				"links": [],
+				"namespace": "http://docs.openstack.org/ext/neutron/service-type/api/v1.0",
+				"alias": "service-type",
+				"description": "API for retrieving service providers for Neutron advanced services"
+			}
+		]
+	}
+}
+`
+
+// HandleListExtensionsSuccessfully creates an HTTP handler that returns ListOutput for a List
+// call.
+func HandleListExtensionsSuccessfully(t *testing.T) {
+	th.Mux.HandleFunc("/extensions", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", client.TokenID)
+
+		w.Header().Add("Content-Type", "application/json")
+
+		fmt.Fprintf(w, `
+{
+  "extensions": {
+    "values": [
+      {
+        "updated": "2013-01-20T00:00:00-00:00",
+        "name": "Neutron Service Type Management",
+        "links": [],
+        "namespace": "http://docs.openstack.org/ext/neutron/service-type/api/v1.0",
+        "alias": "service-type",
+        "description": "API for retrieving service providers for Neutron advanced services"
+      }
+    ]
+  }
+}
+    `)
+	})
+
+}