docs: public boolean invokeFunction(String funcName, Object[] args)
      {
          mLastError = null;
          if (mScriptFile != null)
          {
              if (mScriptFile.invokeFunction(funcName, args))
              {
                  return true;
              }
          }
          mLastError = mScriptFile.getLastError();
          if ((mLastError != null) && !mLastError.contains("is not defined"))
          {
              getGVRContext().logError(mLastError, this);
          }
          return false;
      }