@java.lang.Override
    public long getXMin() {
      return xMin_;
    }
<pre>
The minimum x coordinate value.
</pre>

<code>optional int64 x_min = 1;</code>

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