public boolean hasStartOffset() {
        return ((bitField0_ & 0x00000001) != 0);
      }
<pre>
Start time offset of the partition.
</pre>

<code>.google.protobuf.Duration start_offset = 1;</code>

@return Whether the startOffset field is set.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Partition.java