// Package domain contains pure domain models with no external dependencies.
package domain

import "errors"

var (
	// ErrUnknownKey indicates a preference key is not in the allowed set.
	ErrUnknownKey = errors.New("unknown preference key")

	// ErrInvalidValue indicates a preference value is not valid for the given key.
	ErrInvalidValue = errors.New("invalid preference value")

	// ErrForbidden indicates the user is not allowed to access the resource.
	ErrForbidden = errors.New("access denied")
)