Is it possible to do a password less signIn & signOut with amplify_auth_cognito in flutter?

I'm trying to do a password less signIn & signOut in flutter with amplify, but I don't see an option on the amplify_auth_cognito package (that aws provides in pub.dev) that allows or hints me how to do it, is it even possible to do it with this package or should I use some other package? if yes then which one and how to do it?

The user pool that I'm using is from an actual working web application which I imported following the aws flutter documentaion

Thank you in advance.

What I experimented with was the default methods provided by amplify_auth_cognito as shown below:

      var signUpConfirmedd = await auth.signUp(
        username: _email,
        // tried not filling the password field but it doesn't work
        password: '1234567890',
        options: CognitoSignUpOptions(
          userAttributes: {
            CognitoUserAttributeKey.email: _email,
            CognitoUserAttributeKey.name: 'nityy'
          },
        ),
      );