public static com.google.cloud.vision.v1.Symbol parseDelimitedFrom(java.io.InputStream input)
      throws java.io.IOException {
    return com.google.protobuf.GeneratedMessageV3.parseDelimitedWithIOException(PARSER, input);
  }
<pre>
Confidence of the OCR results for the symbol. Range [0, 1].
</pre>

<code>float confidence = 4;</code>

@return The confidence.
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/Symbol.java