Sets whether self is locked.
If FALSE, folding when the flap is revealed automatically closes it, and unfolding it when the flap is not revealed opens it. If TRUE, propertyFlap:reveal-flap value never changes on its own.
the new value
Deprecated: See the migration guide
Sets whether self is locked.
If FALSE, folding when the flap is revealed automatically closes it, and unfolding it when the flap is not revealed opens it. If TRUE, propertyFlap:reveal-flap value never changes on its own.