@java.lang.Override
  public Builder newBuilderForType() {
    return newBuilder();
  }
<pre>
The fraction of pixels the color occupies in the image.
Value in range [0, 1].
</pre>

<code>float pixel_fraction = 3;</code>

@return The pixelFraction.
java-vision/proto-google-cloud-vision-v1p1beta1/src/main/java/com/google/cloud/vision/v1p1beta1/ColorInfo.java