public Builder clearYmin() {
        bitField0_ = (bitField0_ & ~0x00000002);
        ymin_ = 0F;
        onChanged();
        return this;
      }
<pre>
Min in y coordinate.
</pre>

<code>float ymin = 2;</code>

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