public Builder clearPostingPublishTime() {
      bitField0_ = (bitField0_ & ~0x00800000);
      postingPublishTime_ = null;
      if (postingPublishTimeBuilder_ != null) {
        postingPublishTimeBuilder_.dispose();
        postingPublishTimeBuilder_ = null;
      }
      onChanged();
      return this;
    }
<pre>
The timestamp this job posting was most recently published. The default
value is the time the request arrives at the server. Invalid timestamps are
ignored.
</pre>

<code>.google.protobuf.Timestamp posting_publish_time = 24;</code>
java-talent/proto-google-cloud-talent-v4beta1/src/main/java/com/google/cloud/talent/v4beta1/Job.java