@java.lang.Override
    public final boolean isInitialized() {
      byte isInitialized = memoizedIsInitialized;
      if (isInitialized == 1) return true;
      if (isInitialized == 0) return false;

      memoizedIsInitialized = 1;
      return true;
    }
<pre>
The number of stack frames that were dropped because there
were too many stack frames.
If this value is 0, then no stack frames were dropped.
</pre>

<code>int32 dropped_frames_count = 2;</code>

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