diff --git a/includes/globals.inc b/includes/globals.inc
index e85a71bc..3cece340 100644
--- a/includes/globals.inc
+++ b/includes/globals.inc
@@ -321,8 +321,23 @@ function islandora_get_missing_datastreams_requirements(FedoraObject $object) {
  *   object.
  */
 function islandora_get_datastreams_requirements(FedoraObject $object) {
+  return islandora_get_datastreams_requirements_from_models($object->models);
+}
+
+/**
+ * Get the list of which datastreams are valid in the given set of models.
+ *
+ * @param array $models
+ *   An array of content models PIDs from which to parse the DS-COMPOSITE-MODEL
+ *   stream.
+ *
+ * @return array
+ *   An associative array of associative arrays, merged from calls to
+ *   islandora_get_datastreams_requirements_from_content_model(). 
+ */
+function islandora_get_datastreams_requirements_from_models(array $models) {
   $dsids = array();
-  foreach ($object->models as  $model) {
+  foreach ($models as  $model) {
     $model = islandora_get_object_by_id($model);
     $dsids += islandora_get_datastreams_requirements_from_content_model($model);
   }
diff --git a/islandora.api.php b/islandora.api.php
index 9f1e1e5c..337814fa 100644
--- a/islandora.api.php
+++ b/islandora.api.php
@@ -235,6 +235,10 @@ function hook_islandora_undeletable_datastreams(array $models) {}
  *   - form_id: The form building function to call to get the form structure
  *     for this step.
  *   - args: An array of arguments to pass to the form building function.
+ *   And may optionally include both:
+ *   - module: A module from which we want to load an include.
+ *   - file: A file to include (relative to the module's path, including the
+ *     file's extension).
  */
 function hook_islandora_ingest_steps(array $configuration) {
   return array(