Mock GRPC client is created using this library https://github.com/golang/mock
An example to generate mock_core.go:
cd $FEAST_REPO/cli/feast
mockgen --package mock github.com/gojek/feast/protos/generated/go/feast/core CoreServiceClient > cmd/mock/core_service.go
We need to re-run
mockgenwhenever the protos for the services are updated