Method newConcatConv

core/engine.cpp:122–125

  }

  Ref<ConcatConv> Engine::newConcatConv(const ConcatConvDesc& desc)
  {
    throw std::logic_error("concat+conv operation is not implemented");
  }

  Ref<ConcatConv2> Engine::newConcatConv2(const ConcatConvDesc& desc)
  {