@java.lang.Override
  public int hashCode() {
    if (memoizedHashCode != 0) {
      return memoizedHashCode;
    }
    int hash = 41;
    hash = (19 * hash) + getDescriptor().hashCode();
    if (hasBoundingPoly()) {
      hash = (37 * hash) + BOUNDING_POLY_FIELD_NUMBER;
      hash = (53 * hash) + getBoundingPoly().hashCode();
    }
    hash = (37 * hash) + CONFIDENCE_FIELD_NUMBER;
    hash = (53 * hash) + java.lang.Float.floatToIntBits(getConfidence());
    hash = (37 * hash) + IMPORTANCE_FRACTION_FIELD_NUMBER;
    hash = (53 * hash) + java.lang.Float.floatToIntBits(getImportanceFraction());
    hash = (29 * hash) + getUnknownFields().hashCode();
    memoizedHashCode = hash;
    return hash;
  }
<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-v1p1beta1/src/main/java/com/google/cloud/vision/v1p1beta1/CropHint.java