@Override
    public Set<String> getAuthRequestHeaders(Context<? extends Trait> context, CognitoUserPoolsTrait trait) {
        return REQUEST_HEADERS;
    }
An authentication scheme converter that adds Cognito User Pool based
authentication ({@code cognito_user_pools} to an OpenAPI model when the
{@code aws.auth#cognitoUserPools} authentication scheme is found on
a service shape.

@see <a href="https://docs.aws.amazon.com/apigateway/latest/developerguide/apigateway-enable-cognito-user-pool.html">Integrate a REST API with a User Pool </a>
smithy-aws-apigateway-openapi/src/main/java/software/amazon/smithy/aws/apigateway/openapi/CognitoUserPoolsConverter.java