Copyright 2012-2017 Horde LLC (http://www.horde.org/)
See the enclosed file LICENSE for license information (ASL). If you did not receive this file, see http://www.horde.org/licenses/apache.
| Ingo_Script_Sieve_Test_Exists | The Ingo_Script_Sieve_Test_Exists class represents a test for the existence of one or more headers in a message. |