private void saveVariable(Map<PsiVariable, VariableInfo> variableInfoMap,
                            PsiVariable var,
                            PsiReferenceExpression usage) {
    VariableInfo info = variableInfoMap.get(var);
    if (info == null) {
      info = new VariableInfo(var);
      variableInfoMap.put(var, info);
    }
    info.saveInField |= !isUsedInInitializer(usage);
  }
private void saveVariable(Map<PsiVariable, VariableInfo> variableInfoMap,
                            PsiVariable var,
                            PsiReferenceExpression usage)