List<PsiVariable> getUsedVariablesInBody(PsiElement codeFragment, PsiVariable[] outputVariables) {
    final List<PsiVariable> variables = getUsedVariables(myFlowStart, myFlowEnd);
    if (skipVariablesFromExitStatements(outputVariables)) {
      removeParametersUsedInExitsOnly(codeFragment, variables);
    }
    return variables;
  }
List<PsiVariable> getUsedVariablesInBody(PsiElement codeFragment, PsiVariable[] outputVariables)