• Conditional() : NullPointerCore.Backend
• Conditional< T >() : NullPointerCore.Backend
• Conditional< T0, T1 >() : NullPointerCore.Backend
• Conditional< T0, T1, T2 >() : NullPointerCore.Backend
• Conditional< T0, T1, T2, T3 >() : NullPointerCore.Backend