code: public OperationTransformerEntry resolveOperationTransformer(final PathAddress address, final String operationName, PlaceholderResolver placeholderResolver) {
          final Iterator<PathElement> iterator = address.iterator();
          final OperationTransformerEntry entry = resolveOperationTransformer(iterator, operationName, placeholderResolver);
          if(entry != null) {
              return entry;
          }
          // Default is forward unchanged
          return FORWARD;
      }
docs: Resolve an operation transformer entry.
  
  @param address the address
  @param operationName the operation name
  @param placeholderResolver a placeholder resolver used to resolve children of a placeholder registration
  @return the transformer entry