public Builder setIsPrefix(boolean value) {

        isPrefix_ = value;
        bitField0_ |= 0x00000002;
        onChanged();
        return this;
      }
<pre>
True if break prepends the element.
</pre>

<code>bool is_prefix = 2;</code>

@param value The isPrefix to set.
@return This builder for chaining.
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/TextAnnotation.java