RefTuple4

type RefTuple4<DB, TB extends keyof DB, R1, R2, R3, R4> = DrainOuterGeneric<[ExtractTypeFromReferenceExpression<DB, TB, R1>, ExtractTypeFromReferenceExpression<DB, TB, R2>, ExtractTypeFromReferenceExpression<DB, TB, R3>, ExtractTypeFromReferenceExpression<DB, TB, R4>]>;