public Builder clearStartOffset() {
        bitField0_ = (bitField0_ & ~0x00000001);
        startOffset_ = null;
        if (startOffsetBuilder_ != null) {
          startOffsetBuilder_.dispose();
          startOffsetBuilder_ = null;
        }
        onChanged();
        return this;
      }
<pre>
Start time offset of the partition.
</pre>

<code>.google.protobuf.Duration start_offset = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Partition.java