Imports github.com/apache/beam/sdks/go/pkg/beam/core/runtime/harness google.golang.org/grpc github.com/apache/beam/sdks/go/pkg/beam/log github.com/apache/beam/sdks/go/pkg/beam/model/fnexecution_v1 github.com/apache/beam/sdks/go/pkg/beam/util/grpcx Standard library imports context fmt net sync