/// <summary>
/// Creates a new list of requirements associated with this <see cref="Validator{TObject}"/> with a specified key
/// </summary>
/// <typeparam name="TProperty">The type of the property to validate</typeparam>
/// <param name="expression">An expression defining the property to validate</param>
/// <param name="key">The key to identify requirements in this list by</param>
/// <returns>A <see cref="IRequirementList{TObject,TProperty}"/> associated with the specified property</returns>
protected IRequirementList <TTarget, TProperty> Require <TProperty>(Func <TTarget, TProperty> expression, string key)
{
var list = new RequirementList <TTarget, TProperty>(expression, key);
requirements.Add(list);
return(list);
}
/// <summary>
/// Creates a new list of requirements associated with this <see cref="Validator{TObject}"/>
/// </summary>
/// <typeparam name="TProperty">The type of the property to validate</typeparam>
/// <param name="expression">An expression defining the property to validate</param>
/// <returns>A <see cref="IRequirementList{TObject,TProperty}"/> associated with the specified property</returns>
protected IRequirementList <TTarget, TProperty> Require <TProperty>(Expression <Func <TTarget, TProperty> > expression)
{
var list = new RequirementList <TTarget, TProperty>(expression);
requirements.Add(list);
return(list);
}