How to create Cognito IdentityPool with Cognito UserPool as one of the Authentication provider using aws cdk?

Question

I am trying to create a Cognito FederatedIdentityPool with CognitoUserPool as one Authentication Provider. Creating UserPool was easy enough:

Answer 1

I was able to figure our how to attach UserPool to Identity Pool

    const userPool = new cognito.CfnUserPool(this, 'MyCognitoUserPool')
    const userPoolClient = new cognito.CfnUserPoolClient(this, 'MyCognitoUserPoolClient', {
      generateSecret: false,
      userPoolId: userPool.userPoolId
    });

    const identityPool = new cognito.CfnIdentityPool(this, 'MyCognitoIdentityPool', {
      allowUnauthenticatedIdentities: false,
      cognitoIdentityProviders: [{
        clientId: userPoolClient.userPoolClientId,
        providerName: userPool.userPoolProviderName
      }]
    });

Still struggling with attaching Role to IdentityPool and don't know the difference between CfnUserPool and UserPool. However, this question can marked as partially resolved.