docs: public <S extends io.sarl.lang.core.Space> S createSpace(SpaceID spaceID,
  			Class<? extends SpaceSpecification<S>> spec, Object... creationParams) {
  		synchronized (getSpaceRepositoryMutex()) {
  			if (!this.spaces.containsKey(spaceID)) {
  				return createSpaceInstance(spec, spaceID, true, creationParams);
  			}
  		}
  		return null;
  	}