@NotNull
  private static GrExpressionWrapper createExpressionWrapper(@NotNull GrIntroduceContext context) {
    GrExpression expression = context.getExpression();
    GrVariable var = context.getVar();
    assert expression != null || var != null ;

    GrExpression initializer = expression != null ? expression : var.getInitializerGroovy();
    return new GrExpressionWrapper(initializer);
  }
@NotNull
  private static GrExpressionWrapper createExpressionWrapper(@NotNull GrIntroduceContext context)