func (agg aggregate) Errors() []error {
	return []error(agg)
}

// Matcher is used to match errors.  Returns true if the error matches.
type Matcher func(error) bool

// FilterOut removes all errors that match any of the matchers from the input
// error.  If the input is a singular error, only that error is tested.  If the
// input implements the Aggregate interface, the list of errors will be

				s.Type = ""

				changed = true
			}

			for f, fs := range s.Properties {
				if fs.Nullable {
					s.ValueValidation.Required, changed = filterOut(s.ValueValidation.Required, f)
				}
			}
			if s.AdditionalProperties != nil && s.AdditionalProperties.Structural != nil && s.AdditionalProperties.Structural.Nullable {
				s.ValueValidation.Required, changed = nil, true

// multiple times, use the Infos() method.
func (r *Result) Visit(fn VisitorFunc) error {
	if r.err != nil {
		return r.err
	}
	err := r.visitor.Visit(fn)
	return utilerrors.FilterOut(err, r.ignoreErrors...)
}

// IntoSingleItemImplied sets the provided boolean pointer to true if the Builder input
// implies a single item, or multiple.
func (r *Result) IntoSingleItemImplied(b *bool) *Result {