[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[],[],null,["# Class TopicBuilder (2.39.0)\n\nVersion 2.39.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/pubsub/latest/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.41.0](/cpp/docs/reference/pubsub/2.41.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.40.0](/cpp/docs/reference/pubsub/2.40.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.39.0](/cpp/docs/reference/pubsub/2.39.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.38.0](/cpp/docs/reference/pubsub/2.38.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.37.0](/cpp/docs/reference/pubsub/2.37.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.36.0](/cpp/docs/reference/pubsub/2.36.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.35.0](/cpp/docs/reference/pubsub/2.35.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.34.0](/cpp/docs/reference/pubsub/2.34.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.33.0](/cpp/docs/reference/pubsub/2.33.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.32.0](/cpp/docs/reference/pubsub/2.32.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.31.0](/cpp/docs/reference/pubsub/2.31.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.30.0](/cpp/docs/reference/pubsub/2.30.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.29.0](/cpp/docs/reference/pubsub/2.29.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.28.0](/cpp/docs/reference/pubsub/2.28.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.27.0](/cpp/docs/reference/pubsub/2.27.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.26.0](/cpp/docs/reference/pubsub/2.26.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.25.1](/cpp/docs/reference/pubsub/2.25.1/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.24.0](/cpp/docs/reference/pubsub/2.24.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.23.0](/cpp/docs/reference/pubsub/2.23.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.22.1](/cpp/docs/reference/pubsub/2.22.1/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.21.0](/cpp/docs/reference/pubsub/2.21.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.20.0](/cpp/docs/reference/pubsub/2.20.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.19.0](/cpp/docs/reference/pubsub/2.19.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.18.0](/cpp/docs/reference/pubsub/2.18.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.17.0](/cpp/docs/reference/pubsub/2.17.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.16.0](/cpp/docs/reference/pubsub/2.16.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.15.1](/cpp/docs/reference/pubsub/2.15.1/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.14.0](/cpp/docs/reference/pubsub/2.14.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.13.0](/cpp/docs/reference/pubsub/2.13.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.12.0](/cpp/docs/reference/pubsub/2.12.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder)\n- [2.11.0](/cpp/docs/reference/pubsub/2.11.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicBuilder) \nBuilds requests to create or update a Cloud Pub/Sub topic. \nMakes it easier to create the protobuf messages consumed by [`TopicAdminClient`](/cpp/docs/reference/pubsub/2.39.0/classgoogle_1_1cloud_1_1pubsub_1_1TopicAdminClient). The main advantages are:\n\n- Use a fluent API to set multiple values when constructing complex objects.\n- Automatically compute the set of paths for update requests.\n\nConstructors\n------------\n\n### TopicBuilder(Topic const \\&)\n\nFunctions\n---------\n\n### add_label(std::string const \\&, std::string const \\&) \\&\n\nSetters for each protocol buffer field.\n\n### add_label(std::string const \\&, std::string const \\&) \\&\\&\n\nSetters for each protocol buffer field.\n\n### clear_labels() \\&\n\nSetters for each protocol buffer field.\n\n### clear_labels() \\&\\&\n\nSetters for each protocol buffer field.\n\n### add_allowed_persistence_region(std::string) \\&\n\nSetters for each protocol buffer field.\n\n### add_allowed_persistence_region(std::string) \\&\\&\n\nSetters for each protocol buffer field.\n\n### clear_allowed_persistence_regions() \\&\n\nSetters for each protocol buffer field.\n\n### clear_allowed_persistence_regions() \\&\\&\n\nSetters for each protocol buffer field.\n\n### set_kms_key_name(std::string) \\&\n\nSetters for each protocol buffer field.\n\n### set_kms_key_name(std::string) \\&\\&\n\nSetters for each protocol buffer field.\n\n### set_schema(pubsub::Schema const \\&) \\&\n\nSetters for each protocol buffer field.\n\n### set_schema(pubsub::Schema const \\&) \\&\\&\n\nSetters for each protocol buffer field.\n\n### set_encoding(google::pubsub::v1::Encoding) \\&\n\nSetters for each protocol buffer field.\n\n### set_encoding(google::pubsub::v1::Encoding) \\&\\&\n\nSetters for each protocol buffer field.\n\n### set_first_revision_id(std::string const \\&) \\&\n\nSetters for each protocol buffer field.\n\n### set_first_revision_id(std::string const \\&) \\&\\&\n\nSetters for each protocol buffer field.\n\n### set_last_revision_id(std::string const \\&) \\&\n\nSetters for each protocol buffer field.\n\n### set_last_revision_id(std::string const \\&) \\&\\&\n\nSetters for each protocol buffer field.\n\n### set_message_retention_duration(std::chrono::duration\\\u003c Rep, Period \\\u003e) \\&\n\nSetters for each protocol buffer field.\n\n### set_message_retention_duration(std::chrono::duration\\\u003c Rep, Period \\\u003e) \\&\\&\n\nSetters for each protocol buffer field.\n\n### set_message_retention_duration(google::protobuf::Duration const \\&) \\&\n\nSetters for each protocol buffer field.\n\n### set_message_retention_duration(google::protobuf::Duration const \\&) \\&\\&\n\nSetters for each protocol buffer field.\n\n### BuildCreateRequest() \\&\\&\n\nBuild a protocol buffer message to create a new topic.\n\n### BuildUpdateRequest() \\&\\&\n\nBuild a protocol buffer message to update an existing topic."]]
