// find spu id that can be used in the reeokuca
find spu id that can be used in the reeokuca
find spu id that can be used in the reeokuca
pub fn spu_ids_for_replica(&self) -> Vec<i32> {
        self.inner_store()
            .read()
            .values()
            .filter_map(|spu| Some(*spu.id()))
            .collect()
    }
pub fn spu_ids_for_replica ( & self ) -> Vec < i32 > { self . inner_store ( ) . read ( ) . values ( ) . filter_map ( | spu | Some ( * spu . id ( ) ) ) . collect ( ) }
find spu id that can be used in the reeokuca
find spu id that can be used in the reeokuca
&self