package properties type CanValidateValue interface { ValidateICalValue() error } type CanDecodeValue interface { DecodeICalValue(string) error } type CanDecodeParams interface { DecodeICalParams(Params) error } type CanEncodeTag interface { EncodeICalTag() (string, error) } type CanEncodeValue interface { EncodeICalValue() (string, error) } type CanEncodeName interface { EncodeICalName() (PropertyName, error) } type CanEncodeParams interface { EncodeICalParams() (Params, error) }