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)},
+		}
+	})
+}