/// <summary>
/// Observeses the property.
/// </summary>
/// <typeparam name="TParameter">The type of the owner.</typeparam>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <param name="parameter">The parameter.</param>
/// <param name="propertyExpression">The property expression.</param>
/// <returns>
/// Result of ObservesProperty as PropertyObserver<TParameter, TResult>.
/// </returns>
public PropertyObserver <TParameter, TResult> ObservesProperty <TParameter, TResult>(
TParameter parameter,
Expression <Func <TParameter, TResult> > propertyExpression)
where TParameter : INotifyPropertyChanged
where TResult : struct =>
PropertyObserver <TParameter, TResult> .Create(parameter, propertyExpression);
/// <summary>
/// Observeses the property.
/// </summary>
/// <typeparam name="TResult">The type of the type.</typeparam>
/// <param name="propertyExpression">The property expression.</param>
/// <returns>The PropertyObserver.</returns>
public PropertyObserver <TResult> ObservesProperty <TResult>(
Expression <Func <TResult> > propertyExpression) =>
PropertyObserver <TResult> .Create(propertyExpression);
