ReferenceCache <TParameter, TResult>(this IParameterizedSource <TParameter, TResult> @this)
where TParameter : class where TResult : class
=>
new DelegatedSource <TParameter, TResult>(
ReferenceCachingAlteration <TParameter, TResult>
.Default.Get(@this.ToSelectionDelegate()));
/// <summary>This is considered unsupported internal framework code and is not intended for external use.</summary>
/// <typeparam name="TParameter">The type of the t parameter.</typeparam>
/// <typeparam name="TResult">The type of the t result.</typeparam>
/// <param name="this">The this.</param>
/// <returns>ISpecification<TParameter>.</returns>
public static ISpecification <TParameter> IfAssigned <TParameter, TResult>(
this IParameterizedSource <TParameter, TResult> @this)
=> @this.ToSelectionDelegate()
.IfAssigned();