Imports cloud.google.com/go/storage github.com/apache/beam/sdks/go/pkg/beam/internal/errors github.com/apache/beam/sdks/go/pkg/beam/model/jobmanagement_v1 github.com/apache/beam/sdks/go/pkg/beam/util/gcsx github.com/golang/protobuf/proto golang.org/x/net/context Standard library imports crypto/sha256 bytes encoding/hex hash io path sync