如何在Retrofit中通过回调访问onResponse方法中的数据？

public interface ApiService {
    @GET("api/data")
    Call<DataResponse> getData();
}

Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("https://example.com/")
        .addConverterFactory(GsonConverterFactory.create())
        .build();

ApiService apiService = retrofit.create(ApiService.class);

Call<DataResponse> call = apiService.getData();
call.enqueue(new Callback<DataResponse>() {
    @Override
    public void onResponse(Call<DataResponse> call, Response<DataResponse> response) {
        if (response.isSuccessful()) {
            DataResponse dataResponse = response.body();
            // 在这里处理响应数据
        } else {
            // 处理请求失败的情况
        }
    }

    @Override
    public void onFailure(Call<DataResponse> call, Throwable t) {
        // 处理请求失败的情况
    }
});