Starting documentation and privatising unnecessary exports
diff --git a/openstack/networking/v2/extensions/requests.go b/openstack/networking/v2/extensions/requests.go
index 7120490..d24108e 100644
--- a/openstack/networking/v2/extensions/requests.go
+++ b/openstack/networking/v2/extensions/requests.go
@@ -6,9 +6,11 @@
 	"github.com/rackspace/gophercloud/pagination"
 )
 
-func Get(c *gophercloud.ServiceClient, name string) (*Extension, error) {
+// Get retrieves information for a specific extension using its alias. If no
+// extension exists with this alias, an error will be returned.
+func Get(c *gophercloud.ServiceClient, alias string) (*Extension, error) {
 	var ext Extension
-	_, err := perigee.Request("GET", ExtensionURL(c, name), perigee.Options{
+	_, err := perigee.Request("GET", extensionURL(c, alias), perigee.Options{
 		MoreHeaders: c.Provider.AuthenticatedHeaders(),
 		Results: &struct {
 			Extension *Extension `json:"extension"`
@@ -22,8 +24,10 @@
 	return &ext, nil
 }
 
+// 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 pagination.NewPager(c, ListExtensionURL(c), func(r pagination.LastHTTPResponse) pagination.Page {
+	return pagination.NewPager(c, listExtensionURL(c), func(r pagination.LastHTTPResponse) pagination.Page {
 		return ExtensionPage{pagination.SinglePageBase(r)}
 	})
 }