question: private static S2CellId fromFaceIJWrap ( int face , int i , int j ) { i = Math . max ( - 1 , Math . min ( MAX_SIZE , i ) ) ; j = Math . max ( - 1 , Math . min ( MAX_SIZE , j ) ) ; final double kScale = 1.0 / MAX_SIZE ; double s = kScale * ( ( i << 1 ) + 1 - MAX_SIZE ) ; double t = kScale * ( ( j << 1 ) + 1 - MAX_SIZE ) ; S2Point p = S2Projections . faceUvToXyz ( face , s , t ) ; face = S2Projections . xyzToFace ( p ) ; R2Vector st = S2Projections . validFaceXyzToUv ( face , p ) ; return fromFaceIJ ( face , stToIJ ( st . x ( ) ) , stToIJ ( st . y ( ) ) ) ; }
target:  Given (i, j) coordinates that may be out of bounds, normalize them by returning the corresponding neighbor cell on an adjacent face.