if (access(mTestFile, F_OK)) { mTestFile = NULL; return OK; }
LOG(("PREPARE ADD %s\n", mFile));
PatchIfFile::Prepare(){  // If the test file does not exist, then turn disable this action.  if (access(mTestFile, F_OK)) {    mTestFile = NULL;    return OK;  }  return PatchFile::Prepare();}