input directory path, go module;package flag, gRPC ServiceConfig path flag, API service config path flag, release level
google/cloud/texttospeech/v1, --go-gapic-package cloud.google.com/go/texttospeech/apiv1;texttospeech, --grpc-service-config google/cloud/texttospeech/v1/texttospeech_grpc_service_config.json, --gapic-service-config google/cloud/texttospeech/v1/texttospeech_v1.yaml, --release-level alpha
google/cloud/asset/v1, --go-gapic-package cloud.google.com/go/asset/apiv1;asset, --grpc-service-config google/cloud/asset/v1/cloudasset_grpc_service_config.json, --gapic-service-config google/cloud/asset/v1/cloudasset_v1.yaml, --release-level alpha
google/cloud/language/v1, --go-gapic-package cloud.google.com/go/language/apiv1;language, --grpc-service-config google/cloud/language/v1/language_grpc_service_config.json, --gapic-service-config google/cloud/language/language_v1.yaml, --release-level alpha
google/cloud/phishingprotection/v1beta1, --go-gapic-package cloud.google.com/go/phishingprotection/apiv1beta1;phishingprotection, --grpc-service-config google/cloud/phishingprotection/v1beta1/phishingprotection_grpc_service_config.json, --gapic-service-config google/cloud/phishingprotection/v1beta1/phishingprotection_v1beta1.yaml, --release-level beta