1 files changed, 7 insertions, 27 deletions
diff --git a/phpBB/phpbb/db/migration/migration.php b/phpBB/phpbb/db/migration/migration.php
index 2304c8e44c..4e218344f4 100644
--- a/phpBB/phpbb/db/migration/migration.php
+++ b/phpBB/phpbb/db/migration/migration.php
@@ -20,7 +20,7 @@ namespace phpbb\db\migration;
 * in a subclass. This class provides various utility methods to simplify editing
 * a phpBB.
 */
-abstract class migration
+abstract class migration implements migration_interface
 {
 	/** @var \phpbb\config\config */
 	protected $config;
@@ -70,9 +70,7 @@ abstract class migration
 	}
 
 	/**
-	* Defines other migrations to be applied first
-	*
-	* @return array An array of migration class names
+	* {@inheritdoc}
 	*/
 	static public function depends_on()
 	{
@@ -80,14 +78,7 @@ abstract class migration
 	}
 
 	/**
-	* Allows you to check if the migration is effectively installed (entirely optional)
-	*
-	* This is checked when a migration is installed. If true is returned, the migration will be set as
-	* installed without performing the database changes.
-	* This function is intended to help moving to migrations from a previous database updater, where some
-	* migrations may have been installed already even though they are not yet listed in the migrations table.
-	*
-	* @return bool True if this migration is installed, False if this migration is not installed (checked on install)
+	* {@inheritdoc}
 	*/
 	public function effectively_installed()
 	{
@@ -95,9 +86,7 @@ abstract class migration
 	}
 
 	/**
-	* Updates the database schema by providing a set of change instructions
-	*
-	* @return array Array of schema changes (compatible with db_tools->perform_schema_changes())
+	* {@inheritdoc}
 	*/
 	public function update_schema()
 	{
@@ -105,9 +94,7 @@ abstract class migration
 	}
 
 	/**
-	* Reverts the database schema by providing a set of change instructions
-	*
-	* @return array Array of schema changes (compatible with db_tools->perform_schema_changes())
+	* {@inheritdoc}
 	*/
 	public function revert_schema()
 	{
@@ -115,9 +102,7 @@ abstract class migration
 	}
 
 	/**
-	* Updates data by returning a list of instructions to be executed
-	*
-	* @return array Array of data update instructions
+	* {@inheritdoc}
 	*/
 	public function update_data()
 	{
@@ -125,12 +110,7 @@ abstract class migration
 	}
 
 	/**
-	* Reverts data by returning a list of instructions to be executed
-	*
-	* @return array Array of data instructions that will be performed on revert
-	* 	NOTE: calls to tools (such as config.add) are automatically reverted when
-	* 		possible, so you should not attempt to revert those, this is mostly for
-	* 		otherwise unrevertable calls (custom functions for example)
+	* {@inheritdoc}
 	*/
 	public function revert_data()
 	{