https://docs.nvidia.com/holoscan/sdk-user-guide/api/cpp/variable_gxf__extension__manager_8hpp_1a38c648e6425a4b1501a9007439ed33c6.html
Variable holoscan::gxf::kGxfExtensionFactoryName - NVIDIA Docs
Current version of NVIDIA Holoscan
variablegxfnvidiadocs