pub fn entities_mut(&mut self) -> EntitiesMut<Id, Entity> {
        EntitiesMut {
            iter: self.node_map.values_mut(),
        }
    }
/// returns an iterator over all entities.
returns an iterator over all entities.
returns an iterator over all entities .
pub fn entities_mut(&mut self) -> EntitiesMut<Id, Entity> {
        EntitiesMut {
            iter: self.node_map.values_mut(),
        }
    }
pub fn entities_mut ( & mut self ) -> EntitiesMut < Id , Entity > { EntitiesMut { iter : self . node_map . values_mut ( ) , } }
returns an iterator over all entities.
returns an iterator over all entities .
&mut self
&mut self