Queries if model is mutable. An immutable GMenuModel will never emit the "items-changed" signal. Consumers of the model may make optimisations accordingly. Since 2.32
TRUE if the model is mutable (ie: "items-changed" may be emitted).
See Implementation
Queries if model is mutable. An immutable GMenuModel will never emit the "items-changed" signal. Consumers of the model may make optimisations accordingly. Since 2.32