/// <summary>
/// Returns an instance of the Singleton given several of its value and callbacks.
/// </summary>
/// <param name="value">The <see cref="BidirectionalSingleton{T}.Value"/> under consideration.</param>
/// <param name="onBeforeGet">Callback occurs On <see cref="BidirectionalSingleton{T}.BeforeGet"/>.</param>
/// <param name="onBeforeSet">Callback occurs On <see cref="BidirectionalSingleton{T}.BeforeSet"/>.</param>
/// <param name="onAfterSet">Callback occurs On <see cref="BidirectionalSingleton{T}.AfterSet"/>.</param>
/// <param name="onEvaluateGet">Callback occurs On <see cref="BidirectionalSingleton{T}.EvaluateGet"/>.</param>
/// <param name="onEvaluateSet">Callback occurs On <see cref="BidirectionalSingleton{T}.EvaluateSet"/>.</param>
public static BidirectionalSingleton <T> ToBidirectionalSingleton <T>(this T value
, BidirectionalSingletonOnClause <T> onBeforeGet
, BidirectionalSingletonOnClause <T> onBeforeSet
, BidirectionalSingletonOnClause <T> onAfterSet
, TryBidirectionalSingletonOnGetClause <T> onEvaluateGet
, TryBidirectionalSingletonOnSetClause <T> onEvaluateSet) =>
new BidirectionalSingleton <T>(value, onBeforeGet, onBeforeSet, onAfterSet, onEvaluateGet, onEvaluateSet);
/// <summary>
/// Returns an instance of the Singleton given several of its value and callbacks
/// from the perspective of any root <typeparamref name="R"/> instance.
/// </summary>
/// <param name="_">From the perspective of any Root anchor.</param>
/// <param name="onBeforeGet">Callback occurs On <see cref="BidirectionalSingleton{T}.BeforeGet"/>.</param>
/// <param name="onEvaluateGet">Callback occurs On <see cref="BidirectionalSingleton{T}.EvaluateGet"/>.</param>
public static BidirectionalSingleton <T> ToBidirectionalSingleton <R, T>(this R _
, BidirectionalSingletonOnClause <T> onBeforeGet
, TryBidirectionalSingletonOnGetClause <T> onEvaluateGet) =>
new BidirectionalSingleton <T>(onBeforeGet, onEvaluateGet);