Optional
Readonly
This attribute shall contain the current channel. When supported but a channel is not currently tuned to (if a content application is in foreground), the value of the field shall be null.
MatterSpecification.v13.Cluster § 6.6.6.3
This attribute shall contain the current channel. When supported but a channel is not currently tuned to (if a content application is in foreground), the value of the field shall be null.