public long getFunctionExecutionCompleteProcessingTime() {
    return _stats.getLong(_functionExecutionsCompletedProcessingTimeId);
  }
Returns the current value of the "Total time consumed for all completed invocations" stat.

@return the current value of the "functionExecutionCompleteProcessingTime" stat
geode-core/src/main/java/org/apache/geode/internal/cache/execute/metrics/FunctionServiceStats.java