How to use the @aws-cdk/aws-iam.User function in @aws-cdk/aws-iam

this,
      "Secret2",
      secretProps(aurora2, `${DB_CLUSTER_ID}2`)
    );
    secret.addDependsOn(aurora);
    secret2.addDependsOn(aurora2);
    new CfnOutput(this, "AASASecretArn", {
      value: secret.ref
    });
    new CfnOutput(this, "AASASecretArn2", {
      value: secret2.ref
    });

    // TEST USER

    const user = new User(this, "TestUser");
    const policy = new Policy(this, "TestUserPolicy", {
      statements: [
        new PolicyStatement({
          actions: ["rds-data:*"],
          resources: [
            `arn:aws:rds:${this.region}:${this.account}:cluster:${DB_CLUSTER_ID}*`,
            `arn:aws:rds:${this.region}:${this.account}:cluster:${DB_CLUSTER_ID}2*`
          ]
        }),
        new PolicyStatement({
          actions: ["secretsmanager:*"],
          resources: [`${secret.ref}*`, `${secret2.ref}*`]
        })
      ]
    });
    user.attachInlinePolicy(policy);