@java.lang.Override
  public int getStartIndex() {
    return startIndex_;
  }
<pre>
Output only. Start index in the given Part, measured in bytes. Offset from
the start of the Part, inclusive, starting at zero.
</pre>

<code>int32 start_index = 2 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The startIndex.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Segment.java