[Chaos::FPBDRigidClusteredParticleHandle](API\Runtime\Chaos\Chaos\FPBDRigidClusteredParticleHandle) * CreateClusterParticle ( const int32 ClusterGroupIndex, [TArray](API\Runtime\Core\Containers\TArray)< [Chaos::FPBDRigidParticleHandle](API\Runtime\Chaos\Chaos\FPBDRigidParticleHandle) * > && Children, const [FClusterCreationParameters](API\Runtime\Chaos\Chaos\FClusterCreationParameters) & Parameters, [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [Chaos::FImplicitObject](API\Runtime\Chaos\Chaos\FImplicitObject), ESPMode::ThreadSafe > ProxyGeometry, const [FRigidTransform3](API\Runtime\ChaosCore\Chaos\FRigidTransform3) * ForceMassOrientation, const [FUniqueIdx](API\Runtime\Chaos\Chaos\FUniqueIdx) * ExistingIndex )