/// <summary>
/// Initializes a new instance of the <see cref="T:OperatorStack" /> class.
/// </summary>
/// <param name="builder">The builder.</param>
internal OperatorStack(ConstraintBuilder builder)
{
_builder = builder;
}
/// <summary>
/// Initializes a new instance of the <see cref="T:ConstraintStack" /> class.
/// </summary>
/// <param name="builder">The builder.</param>
internal ConstraintStack(ConstraintBuilder builder)
{
_builder = builder;
}