如何验证Specflow中两行的成功文本消息

Feature: Verify success text messages in SpecFlow
    Scenario: Verify two lines of success text messages
        Given I am on the login page
        When I enter valid credentials and click login
        Then I should see the success text message "Login successful"
        And I should see the success text message "Welcome, John Doe"

Step Definitions:
[Binding]
public class VerifySuccessTextMessagesSteps
{
    [Given(@"I am on the login page")]
    public void GivenIAmOnTheLoginPage()
    {
        // Code to navigate to the login page
    }

    [When(@"I enter valid credentials and click login")]
    public void WhenIEnterValidCredentialsAndClickLogin()
    {
        // Code to enter valid credentials and click login
    }

    [Then(@"I should see the success text message ""(.*)""")]
    public void ThenIShouldSeeTheSuccessTextMessage(string message)
    {
        // Code to verify the success text message
        Assert.IsTrue(VerifySuccessTextMessage(message));
    }

    private bool VerifySuccessTextMessage(string message)
    {
        // Code to parse the page or application's text messages and compare with the expected message
        // Return true if the message is found, false otherwise
    }
}