public static com.google.cloud.vision.v1p3beta1.CropHint parseFrom(
      java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)
      throws com.google.protobuf.InvalidProtocolBufferException {
    return PARSER.parseFrom(data, extensionRegistry);
  }
<pre>
Fraction of importance of this salient region with respect to the original
image.
</pre>

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

@return The importanceFraction.
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/CropHint.java