@java.lang.Override
    public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(projectId_)) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 1, projectId_);
      }
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(filter_)) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, filter_);
      }
      if (pageSize_ != 0) {
        output.writeInt32(3, pageSize_);
      }
      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(pageToken_)) {
        com.google.protobuf.GeneratedMessageV3.writeString(output, 4, pageToken_);
      }
      getUnknownFields().writeTo(output);
    }
<pre>
The list page token.
</pre>

<code>string page_token = 4;</code>

@return The bytes for pageToken.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferProto.java