diff --git a/wp-includes/js/media-views.js b/wp-includes/js/media-views.js
index c9c3a8af3e..60ad65ee48 100644
--- a/wp-includes/js/media-views.js
+++ b/wp-includes/js/media-views.js
@@ -2487,18 +2487,28 @@ var Controller = wp.media.controller,
 	CustomizeImageCropper;
 
 /**
- * wp.media.controller.CustomizeImageCropper
+ * A state for cropping an image in the customizer.
  *
+ * @since 4.3.0
+ *
+ * @constructs wp.media.controller.CustomizeImageCropper
  * @memberOf wp.media.controller
- *
- * A state for cropping an image.
- *
- * @class
- * @augments wp.media.controller.Cropper
- * @augments wp.media.controller.State
- * @augments Backbone.Model
+ * @augments wp.media.controller.CustomizeImageCropper.Cropper
+ * @inheritDoc
  */
 CustomizeImageCropper = Controller.Cropper.extend(/** @lends wp.media.controller.CustomizeImageCropper.prototype */{
+	/**
+	 * Posts the crop details to the admin.
+	 *
+	 * Uses crop measurements when flexible in both directions.
+	 * Constrains flexible side based on image ratio and size of the fixed side.
+	 *
+	 * @since 4.3.0
+	 *
+	 * @param {Object} attachment The attachment to crop.
+	 *
+	 * @returns {$.promise} A jQuery promise that represents the crop image request.
+	 */
 	doCrop: function( attachment ) {
 		var cropDetails = attachment.get( 'cropDetails' ),
 			control = this.get( 'control' ),
diff --git a/wp-includes/version.php b/wp-includes/version.php
index f4b8fd2fb0..d4369bbdf9 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-42433';
+$wp_version = '5.0-alpha-42435';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.