code: protected Map<String, OperationTransformer> buildOperationTransformers(AttributeTransformationDescriptionBuilderImpl.AttributeTransformationDescriptionBuilderRegistry registry) {
          final Map<String, OperationTransformer> operations = new HashMap<String, OperationTransformer>();
          for(final Map.Entry<String, OperationTransformationEntry> entry: operationTransformers.entrySet()) {
              final OperationTransformer transformer = entry.getValue().getOperationTransformer(registry);
              operations.put(entry.getKey(), transformer);
          }
          return operations;
      }
docs: Build the operation transformers.
  
  @param registry the shared resource registry
  @return the operation transformers