testcase

type Ela[T any] interface {
	// Equal(other Elastic[T]) bool
	IsDefined() bool
	IsNull() bool
	IsUndefined() bool
	IsZero() bool
	Len() int
	// Map(f func(und.Und[option.Options[T]]) und.Und[option.Options[T]]) Elastic[T]
	MarshalJSON() ([]byte, error)
	Pointer() *T
	Pointers() []*T
	// UnmarshalJSON(data []byte) error
	// Unwrap() und.Und[option.Options[T]]
	Value() T
	Values() []T
	State() und.State
}

type Und[T any] interface {
	DoublePointer() **T
	IsDefined() bool
	IsNull() bool
	IsUndefined() bool
	IsZero() bool
	MarshalJSON() ([]byte, error)
	Pointer() *T
	Unwrap() option.Option[option.Option[T]]
	Value() T
	State() und.State
}