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pub trait InformationProvider<TInformation> { fn get_all_information(&self) -> Vec<&TInformation>; fn get_all_information_mut<'a>(&'a mut self) -> Vec<&'a mut TInformation>; fn get_information(&self, vertex_id: usize) -> &TInformation; fn get_information_mut<'a>(&'a mut self, vertex_id: usize) -> &'a mut TInformation; }