public Builder clearValue() {
        value_ = getDefaultInstance().getValue();
        bitField0_ = (bitField0_ & ~0x00000002);
        onChanged();
        return this;
      }
<pre>
The value of the label attached to the product. Cannot be empty and
cannot exceed 128 bytes.
</pre>

<code>string value = 2;</code>

@return This builder for chaining.
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/Product.java