func IsValidGroupID(gid int64) []string {
	if minGroupID <= gid && gid <= maxGroupID {
		return nil
	}
	return []string{InclusiveRangeError(minGroupID, maxGroupID)}
}

// IsValidUserID tests that the argument is a valid Unix UID.
func IsValidUserID(uid int64) []string {
	if minUserID <= uid && uid <= maxUserID {
		return nil
	}
	return []string{InclusiveRangeError(minUserID, maxUserID)}
}

	goodValues := createUserIDs(0, 1, 1000, 65535, 2147483647)
	for _, val := range goodValues {
		if msgs := IsValidUserID(val); len(msgs) != 0 {
			t.Errorf("expected true for '%d': %v", val, msgs)
		}
	}

	badValues := createUserIDs(-1, -1003, 2147483648, 4147483647)
	for _, val := range badValues {
		if msgs := IsValidUserID(val); len(msgs) == 0 {
			t.Errorf("expected false for '%d'", val)
		}
	}
}

				allErrs = append(allErrs, field.Invalid(fldPath.Child("fsGroup"), *(securityContext.FSGroup), msg))
			}
		}
		if securityContext.RunAsUser != nil {
			for _, msg := range validation.IsValidUserID(*securityContext.RunAsUser) {
				allErrs = append(allErrs, field.Invalid(fldPath.Child("runAsUser"), *(securityContext.RunAsUser), msg))
			}
		}
		if securityContext.RunAsGroup != nil {