public com.google.protobuf.Duration getStartOffset() {
        if (startOffsetBuilder_ == null) {
          return startOffset_ == null
              ? com.google.protobuf.Duration.getDefaultInstance()
              : startOffset_;
        } else {
          return startOffsetBuilder_.getMessage();
        }
      }
<pre>
Start time offset of the partition.
</pre>

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

@return The startOffset.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Partition.java