errs := validateEmbeddedResource(nil, tt.object, schema)
			seenErrs := make([]bool, len(errs))

			for _, expectedError := range tt.errors {
				found := false
				for i, err := range errs {
					if expectedError.matches(err) && !seenErrs[i] {
						found = true
						seenErrs[i] = true
						break
					}
				}

				if !found {

		return ""
	}
	if len(agg) == 1 {
		return agg[0].Error()
	}
	seenerrs := sets.NewString()
	result := ""
	agg.visit(func(err error) bool {
		msg := err.Error()
		if seenerrs.Has(msg) {
			return false
		}
		seenerrs.Insert(msg)
		if len(seenerrs) > 1 {
			result += ", "
		}
		result += msg
		return false
	})
	if len(seenerrs) == 1 {
		return result
	}
	return "[" + result + "]"
}