Set<TreeLeafState> fallenLeaves = new HashSet<TreeLeafState>(nbFallenLeaves);
for (int i = 0; i < nbFallenLeaves; i++) {
fallenLeaves.add(createSpecificTreeLeafState());
}
EnvironmentState environmentState = createSpecificEnvironmentState();
PhysicsState physicsState = createSpecificPhysicsState();
Universe3DState univ3DState = DisplayDataCreatorForTests.createSpecificUniverse3DState();
SynchronizerCoreState synchronizerState = createSpecificSynchronizerCoreState();
DateHandlerState dateHandler = createSpecificDateHandlerState();
return new UniverseState(trees, fallenLeaves, environmentState, physicsState, synchronizerState, dateHandler,
univ3DState);