Add missing doc blocks to wp-admin/includes/*.

Fix some egregious uses of tabbing.
Some functions can simply return `apply_filters(...)` instead of setting a variable that is immediately returned.

See #32444.


git-svn-id: https://develop.svn.wordpress.org/trunk@32654 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/class-wp-importer.php

@@ -14,6 +14,7 @@ class WP_Importer {
 	 *
 	 * @global wpdb $wpdb
 	 *
+	 * @param string $importer_name
 	 * @param string $bid
 	 * @return array
 	 */
@@ -53,6 +54,7 @@ class WP_Importer {
 	 *
 	 * @global wpdb $wpdb
 	 *
+	 * @param string $importer_name
 	 * @param string $bid
 	 * @return int
 	 */
@@ -120,6 +122,11 @@ class WP_Importer {
 		return $hashtable;
 	}
 
+	/**
+	 *
+	 * @param int $blog_id
+	 * @return int|void
+	 */
 	public function set_blog( $blog_id ) {
 		if ( is_numeric( $blog_id ) ) {
 			$blog_id = (int) $blog_id;
@@ -147,6 +154,11 @@ class WP_Importer {
 		return $blog_id;
 	}
 
+	/**
+	 *
+	 * @param int $user_id
+	 * @return int|void
+	 */
 	public function set_user( $user_id ) {
 		if ( is_numeric( $user_id ) ) {
 			$user_id = (int) $user_id;
@@ -179,7 +191,7 @@ class WP_Importer {
 	 * @param string $url
 	 * @param string $username
 	 * @param string $password
-	 * @param bool $head
+	 * @param bool   $head
 	 * @return array
 	 */
 	public function get_page( $url, $username = '', $password = '', $head = false ) {
@@ -254,7 +266,7 @@ class WP_Importer {
  * Exits when a required param is not set.
  *
  * @param string $param
- * @param bool $required
+ * @param bool   $required
  * @return mixed
  */
 function get_cli_args( $param, $required = false ) {