Matrix card attributes

The next table shows matrix card attributes relevant for the LDAP Token List Persister plugin.

Attribute name (examples)	Usage	Type	LDAP Token List Persister plugin
`matrixCard`	The data used to verify or use token list. May be empty.	Binary	R
`matrixCardNext`	The data of the next (future) token list. May be empty.	Binary	R
`matrixCardActive`	Defines whether the token list is active (this affects both the current and the next). Inactive token lists cannot be used for authentication.	Boolean	O
`matrixCardGenerationDate`	The date and time of the generation of a matrix card letter. May be empty.	Timestamp	R
`matrixCardDeliveryDate`	The date and time of the delivery of a matrix card letter. May be empty.	Timestamp	O
`matrixCardOrdered`	A flag telling whether a new matrix card letter should be generated by a batch job. Defaults to false.	Boolean	R
`matrixChalOpenSince`	The date and time of the latest challenge that has been asked but not yet answered.	Timestamp	R
`matrixOpenChals`	The number of unanswered challenges since the last answered challenge (within a timeout window).	Integer	R