/// <summary>
/// Create a new specification which is the logical AND of 2 specifications
/// </summary>
/// <typeparam name="T">Candidate type of specification</typeparam>
/// <param name="lhs">LHS specification</param>
/// <param name="rhs">RHS specification</param>
/// <returns>New specification representing lhs AND rhs</returns>
public static ISpecification <T> And <T>(this ISpecification <T> lhs, ISpecification <T> rhs)
{
return(AndSpecification <T> .Create(lhs, rhs));
}