docs: public boolean registerSlotRequest(SlotRequest slotRequest) throws SlotManagerException {
  		checkInit();
  
  		if (checkDuplicateRequest(slotRequest.getAllocationId())) {
  			LOG.debug("Ignoring a duplicate slot request with allocation id {}.", slotRequest.getAllocationId());
  
  			return false;
  		} else {
  			PendingSlotRequest pendingSlotRequest = new PendingSlotRequest(slotRequest);
  
  			pendingSlotRequests.put(slotRequest.getAllocationId(), pendingSlotRequest);
  
  			try {
  				internalRequestSlot(pendingSlotRequest);
  			} catch (ResourceManagerException e) {
  				// requesting the slot failed --> remove pending slot request
  				pendingSlotRequests.remove(slotRequest.getAllocationId());
  
  				throw new SlotManagerException("Could not fulfill slot request " + slotRequest.getAllocationId() + '.', e);
  			}
  
  			return true;
  		}
  	}