public function getChanges($type)
	{
		if ( ! isset($this->changes[$type]))
		{
			return null;
		}

		return $this->changes[$type];
	}
public function getChanges($type)
	{
		if ( ! isset($this->changes[$type]))
		{
			return null;
		}

		return $this->changes[$type];
	}
public function getChanges ( $ type ) { if ( ! isset ( $ this -> changes [ $ type ] ) ) { return null ; } return $ this -> changes [ $ type ] ; }
Returns all changes for the given type or null if there are no changes.

@param string $type

@return string[]|null
Returns all changes for the given type or null if there are no changes .