@java.lang.Override
    public int hashCode() {
      if (memoizedHashCode != 0) {
        return memoizedHashCode;
      }
      int hash = 41;
      hash = (19 * hash) + getDescriptor().hashCode();
      if (hasMinTimeElapsedSinceLastModification()) {
        hash = (37 * hash) + MIN_TIME_ELAPSED_SINCE_LAST_MODIFICATION_FIELD_NUMBER;
        hash = (53 * hash) + getMinTimeElapsedSinceLastModification().hashCode();
      }
      if (hasMaxTimeElapsedSinceLastModification()) {
        hash = (37 * hash) + MAX_TIME_ELAPSED_SINCE_LAST_MODIFICATION_FIELD_NUMBER;
        hash = (53 * hash) + getMaxTimeElapsedSinceLastModification().hashCode();
      }
      if (getIncludePrefixesCount() > 0) {
        hash = (37 * hash) + INCLUDE_PREFIXES_FIELD_NUMBER;
        hash = (53 * hash) + getIncludePrefixesList().hashCode();
      }
      if (getExcludePrefixesCount() > 0) {
        hash = (37 * hash) + EXCLUDE_PREFIXES_FIELD_NUMBER;
        hash = (53 * hash) + getExcludePrefixesList().hashCode();
      }
      if (hasLastModifiedSince()) {
        hash = (37 * hash) + LAST_MODIFIED_SINCE_FIELD_NUMBER;
        hash = (53 * hash) + getLastModifiedSince().hashCode();
      }
      if (hasLastModifiedBefore()) {
        hash = (37 * hash) + LAST_MODIFIED_BEFORE_FIELD_NUMBER;
        hash = (53 * hash) + getLastModifiedBefore().hashCode();
      }
      hash = (29 * hash) + getUnknownFields().hashCode();
      memoizedHashCode = hash;
      return hash;
    }
<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