@java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
        if (!com.google.protobuf.GeneratedMessage.isStringEmpty(accessKey_)) {
            com.google.protobuf.GeneratedMessage.writeString(output, 1, accessKey_);
        }
        if (!com.google.protobuf.GeneratedMessage.isStringEmpty(secret_)) {
            com.google.protobuf.GeneratedMessage.writeString(output, 2, secret_);
        }
        if (!com.google.protobuf.GeneratedMessage.isStringEmpty(region_)) {
            com.google.protobuf.GeneratedMessage.writeString(output, 3, region_);
        }
        if (!com.google.protobuf.GeneratedMessage.isStringEmpty(endpoint_)) {
            com.google.protobuf.GeneratedMessage.writeString(output, 4, endpoint_);
        }
        if (!com.google.protobuf.GeneratedMessage.isStringEmpty(bucket_)) {
            com.google.protobuf.GeneratedMessage.writeString(output, 5, bucket_);
        }
        getUnknownFields().writeTo(output);
    }
<code>string bucket = 5;</code>

@return The bytes for bucket.
turms-plugins/turms-plugin-livekit/src/main/java/im/turms/plugin/livekit/core/proto/egress/AliOSSUpload.java