public static Builder newBuilder() {
    return DEFAULT_INSTANCE.toBuilder();
  }
<pre>
A Boolean value represented by `true` or `false`.
</pre>

<code>bool bool_value = 3;</code>

@return The boolValue.
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/AttributeValue.java