code: public static InstanceType construct(String identifier, int numberOfComputeUnits, int numberOfCores,
  			int memorySize, int diskCapacity, int pricePerHour) {
  
  		return new InstanceType(identifier, numberOfComputeUnits, numberOfCores, memorySize, diskCapacity, pricePerHour);
  	}
docs: Constructs an {@link InstanceType} from the given parameters.
  
  @param identifier
  identifier for this instance type
  @param numberOfComputeUnits
  number of computational units of this instance type
  @param numberOfCores
  number of CPU cores of this instance type
  @param memorySize
  amount of main memory of this instance type (in MB)
  @param diskCapacity
  disk capacity of this instance type (in GB)
  @param pricePerHour
  price per hour that is charged for running instances of this type