public Builder clearYMin() {
        bitField0_ = (bitField0_ & ~0x00000002);
        yMin_ = 0L;
        onChanged();
        return this;
      }
<pre>
The minimum y coordinate value.
</pre>

<code>optional int64 y_min = 2;</code>

@return This builder for chaining.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Partition.java