FMidPhaseModifierParticleIterator ( [FMidPhaseModifierAccessor](API\Runtime\Chaos\Chaos\FMidPhaseModifierAccessor) * InAccessor, [TGeometryParticleHandle](API\Runtime\Chaos\Chaos\TGeometryParticleHandle)< [FReal](API\Runtime\ChaosCore\Chaos\FReal), 3 > * InParticle, int32 InMidPhaseIndex )