code: func NewLDBStoreParams(storeparams *StoreParams, path string) *LDBStoreParams {
  	return &LDBStoreParams{
  		StoreParams: storeparams,
  		Path:        path,
  		Po:          func(k Address) (ret uint8) { return uint8(Proximity(storeparams.BaseKey, k[:])) },
  	}
  }
docs: // NewLDBStoreParams constructs LDBStoreParams with the specified values.