/// <summary>
/// 验证
/// </summary>
private void Validate(PayParam param)
{
param.CheckNull(nameof(param));
param.Validate();
ValidateParam(param);
_config.Validate();
}
/// <summary>
/// 验证
/// </summary>
/// <param name="config">支付宝配置</param>
/// <param name="param">支付参数</param>
protected void Validate(AlipayConfig config, PayParam param)
{
config.CheckNotNull(nameof(config));
param.CheckNotNull(nameof(param));
config.Validate();
param.Validate();
ValidateParam(param);
}