code: void decreaseNumberOfPendingInstances(final InstanceType instanceType) {
  
  		Integer numberOfRemainingInstances = this.pendingRequests.get(instanceType);
  		if (numberOfRemainingInstances == null) {
  			return;
  		}
  
  		numberOfRemainingInstances = Integer.valueOf(numberOfRemainingInstances.intValue() - 1);
  		if (numberOfRemainingInstances.intValue() == 0) {
  			this.pendingRequests.remove(instanceType);
  		} else {
  			this.pendingRequests.put(instanceType, numberOfRemainingInstances);
  		}
  	}
docs: Decreases the number of remaining instances to request of the given type.
  
  @param instanceType
  the instance type for which the number of remaining instances shall be decreased