public Builder clearLastModifiedSince() {
        bitField0_ = (bitField0_ & ~0x00000010);
        lastModifiedSince_ = null;
        if (lastModifiedSinceBuilder_ != null) {
          lastModifiedSinceBuilder_.dispose();
          lastModifiedSinceBuilder_ = null;
        }
        onChanged();
        return this;
      }
<pre>
If specified, only objects with a "last modification time" on or after
this timestamp and objects that don't have a "last modification time" are
transferred.

The `last_modified_since` and `last_modified_before` fields can be used
together for chunked data processing. For example, consider a script that
processes each day's worth of data at a time. For that you'd set each
of the fields as follows:

*  `last_modified_since` to the start of the day

*  `last_modified_before` to the end of the day
</pre>

<code>.google.protobuf.Timestamp last_modified_since = 5;</code>
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java