allErrs = append(allErrs, validateKMSEndpoint(c, fieldPath.Child("endpoint"))...)
	allErrs = append(allErrs, validateKMSCacheSize(c, fieldPath.Child("cachesize"))...)
	allErrs = append(allErrs, validateKMSAPIVersion(c, fieldPath.Child("apiVersion"))...)
	return allErrs
}

func validateKMSCacheSize(c *apiserver.KMSConfiguration, fieldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}

			field.Invalid(cacheField, positiveCacheSize, "cachesize is not supported in v2"),
		},
	}}

	for _, tt := range testCases {
		t.Run(tt.desc, func(t *testing.T) {
			got := validateKMSCacheSize(tt.in, cacheField)
			if d := cmp.Diff(tt.want, got); d != "" {
				t.Fatalf("KMS Provider validation mismatch (-want +got):\n%s", d)
			}
		})
	}
}