static [FReal](API\Runtime\ChaosCore\Chaos\FReal) CombineHelper ( [FReal](API\Runtime\ChaosCore\Chaos\FReal) A, [FReal](API\Runtime\ChaosCore\Chaos\FReal) B, [ECombineMode](API\Runtime\Chaos\Chaos\FChaosPhysicsMaterial\ECombineMode) Mode )