diff --git a/_site/auth_results.go b/_site/auth_results.go
new file mode 100644
index 0000000..07e0fc7
--- /dev/null
+++ b/_site/auth_results.go
@@ -0,0 +1,16 @@
+package gophercloud
+
+import "time"
+
+// AuthResults encapsulates the raw results from an authentication request. As OpenStack allows
+// extensions to influence the structure returned in ways that Gophercloud cannot predict at
+// compile-time, you should use type-safe accessors to work with the data represented by this type,
+// such as ServiceCatalog() and TokenID().
+type AuthResults interface {
+
+	// Retrieve the authentication token's value from the authentication response.
+	TokenID() (string, error)
+
+	// ExpiresAt retrieves the token's expiration time.
+	ExpiresAt() (time.Time, error)
+}