@java.lang.Override
    public int getSerializedSize() {
      int size = memoizedSize;
      if (size != -1) return size;

      size = 0;
      if (((bitField0_ & 0x00000001) != 0)) {
        size +=
            com.google.protobuf.CodedOutputStream.computeMessageSize(
                1, getMinTimeElapsedSinceLastModification());
      }
      if (((bitField0_ & 0x00000002) != 0)) {
        size +=
            com.google.protobuf.CodedOutputStream.computeMessageSize(
                2, getMaxTimeElapsedSinceLastModification());
      }
      {
        int dataSize = 0;
        for (int i = 0; i < includePrefixes_.size(); i++) {
          dataSize += computeStringSizeNoTag(includePrefixes_.getRaw(i));
        }
        size += dataSize;
        size += 1 * getIncludePrefixesList().size();
      }
      {
        int dataSize = 0;
        for (int i = 0; i < excludePrefixes_.size(); i++) {
          dataSize += computeStringSizeNoTag(excludePrefixes_.getRaw(i));
        }
        size += dataSize;
        size += 1 * getExcludePrefixesList().size();
      }
      if (((bitField0_ & 0x00000004) != 0)) {
        size += com.google.protobuf.CodedOutputStream.computeMessageSize(5, getLastModifiedSince());
      }
      if (((bitField0_ & 0x00000008) != 0)) {
        size +=
            com.google.protobuf.CodedOutputStream.computeMessageSize(6, getLastModifiedBefore());
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSize = size;
      return size;
    }
<pre>
If specified, only objects with a "last modification time" before this
timestamp and objects that don't have a "last modification time" are
transferred.
</pre>

<code>.google.protobuf.Timestamp last_modified_before = 6;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java