Don't see classes that I have to see ( I think so at least karyne). Understand the grpc. General class .proto file. In the class are all public. But I can't see this package. On the screen was priciple the project structure. From the block which is highlighted in red, trying to call functions from the green block.
Here's an example trying to call a public function "DummyServiceBlockingStub"
Tried to manually write "import com.proto.dummy.Dummy.ServiceGrpc;" - see package "proto"