pub fn master_detail(mut self, master: Entity, detail: Entity) -> Self {
        self.state_mut().master = Some(master);
        self.state_mut().detail = Some(detail);
        self
    }
/// Register a master and a detail widget (entity).
Register a master and a detail widget (entity).
Register a master and a detail widget ( entity ) .
pub fn master_detail(mut self, master: Entity, detail: Entity) -> Self {
        self.state_mut().master = Some(master);
        self.state_mut().detail = Some(detail);
        self
    }
pub fn master_detail ( mut self , master : Entity , detail : Entity ) -> Self { self . state_mut ( ) . master = Some ( master ) ; self . state_mut ( ) . detail = Some ( detail ) ; self }
Register a master and a detail widget (entity).
Register a master and a detail widget ( entity ) .
mut self
master
Entity
detail
Entity