diff --git a/islandora/include/fields.inc b/islandora/include/fields.inc
index 61e32a49..a1a8b8e0 100644
--- a/islandora/include/fields.inc
+++ b/islandora/include/fields.inc
@@ -84,7 +84,7 @@ function islandora_add_field_to_bundle($bundle_name, $field_name, $field_label,
  * @param array $field_definition
  *   Field definition for the desired field.
  */
-function islandora_create_field($field_definition) {
+function islandora_create_field(array $field_definition) {
   // If this gets called from an install hook, we can't guarantee the t's
   // existance.
   $t = get_t();
diff --git a/islandora/include/rdf_mapping.inc b/islandora/include/rdf_mapping.inc
index 2230ddc8..1def7777 100644
--- a/islandora/include/rdf_mapping.inc
+++ b/islandora/include/rdf_mapping.inc
@@ -16,7 +16,7 @@
  * @return array
  *   The default RDF mapping for Islandora content types.
  */
-function islandora_get_default_rdf_mapping($bundle, $rdf_types) {
+function islandora_get_default_rdf_mapping($bundle, array $rdf_types) {
   $default_rdf_types = array(
     'ldp:RDFSource',
     'ldp:Container',
diff --git a/islandora/islandora.api.php b/islandora/islandora.api.php
new file mode 100644
index 00000000..6ffc9638
--- /dev/null
+++ b/islandora/islandora.api.php
@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * @file
+ * Hooks provided by Islandora.
+ */
+
+/**
+ * Hook to collect pcdm:File to field mappings.
+ *
+ * @return array
+ *   An associative array, where keys are the name of the field and the values
+ *   are dc:identifier of the associated pcdm:File (e.g. DSID for those using
+ *   the old vocabulary).
+ */
+function hook_pcdm_file_mapping() {
+  return array(
+    'field_mods' => array(
+      'id' => 'MODS',
+      'mimetype' => 'application/xml',
+    ),
+  );
+}
diff --git a/islandora/islandora.module b/islandora/islandora.module
index 7fab8321..6c65c741 100644
--- a/islandora/islandora.module
+++ b/islandora/islandora.module
@@ -62,6 +62,7 @@ function islandora_entity_load($entities, $type) {
   foreach ($entities as $entity) {
     if (strcmp($type, "node") == 0) {
       $entity->rdf_namespaces = rdf_get_namespaces();
+      $entity->pcdm_file_mapping = module_invoke_all("pcdm_file_mapping");
     }
   }
 }
diff --git a/islandora_collection/islandora_collection.module b/islandora_collection/islandora_collection.module
index 1401291c..38542f21 100644
--- a/islandora_collection/islandora_collection.module
+++ b/islandora_collection/islandora_collection.module
@@ -55,7 +55,6 @@ function islandora_collection_rdf_mapping() {
  */
 function islandora_collection_node_postinsert($node) {
   if (isset($_SERVER['HTTP_IGNORE_HOOKS']) && strcmp(strtolower($_SERVER['HTTP_IGNORE_HOOKS']), "true") == 0) {
-    dd("IGNORING HOOK!");
     return;
   }
 
@@ -78,16 +77,13 @@ function islandora_collection_node_postinsert($node) {
                    'data' => json_encode($node),
                  ));
   $response = httprl_send_request();
-  dd($response);
 }
 
 /**
  * Implements hook_update().
  */
 function islandora_collection_node_postupdate($node) {
-  dd("FROM POST UPDATE HOOK");
   if (isset($_SERVER['HTTP_IGNORE_HOOKS']) && strcmp(strtolower($_SERVER['HTTP_IGNORE_HOOKS']), "true") == 0) {
-    dd("IGNORING HOOK!");
     return;
   }
 }
diff --git a/islandora_mods/islandora_mods.module b/islandora_mods/islandora_mods.module
index ff9b53dd..4dd43bb0 100644
--- a/islandora_mods/islandora_mods.module
+++ b/islandora_mods/islandora_mods.module
@@ -10,6 +10,7 @@ define('ISLANDORA_MODS_NAMESPACE_PREFIX', 'mods');
 define('ISLANDORA_MODS_RDF_NAMESPACE', 'http://www.loc.gov/mods/modsrdf/v1#');
 define('ISLANDORA_MODS_RDF_NAMESPACE_PREFIX', 'modsrdf');
 define('ISLANDORA_MODS_FIELD', 'field_mods');
+define('ISLANDORA_MODS_FILE_ID', 'MODS');
 
 /**
  * Implements hook_rdf_namespaces().
@@ -19,3 +20,15 @@ function islandora_mods_rdf_namespaces() {
     ISLANDORA_MODS_RDF_NAMESPACE_PREFIX => ISLANDORA_MODS_RDF_NAMESPACE,
   );
 }
+
+/**
+ * Implements hook_pcdm_file_mapping().
+ */
+function islandora_mods_pcdm_file_mapping() {
+  return array(
+    ISLANDORA_MODS_FIELD => array(
+      'id' => ISLANDORA_MODS_FILE_ID,
+      'mimetype' => 'application/xml',
+    ),
+  );
+}