code: private static <T> T allocateMemoryForClass(final JBBPFieldStruct root, final Class<T> klazz) {
      try {
        return CLASS_INSTANTIATOR.makeClassInstance(klazz);
      } catch (InstantiationException ex) {
        throw new JBBPMapperException("Can't make an instance of a class", root, klazz, null, ex);
      }
    }
docs: Makes an instance of a class without call of its constructor, just allocate
  memory
  
  @param <T>   a class which instance is needed
  @param root  the structure to be mapped, it is needed as info for exception
  @param klazz the class which instance is needed
  @return an instance of the class without called constructor
  @throws JBBPMapperException it will be thrown if it is impossible to make
  an instance