account-sdk/examples/testapp/config/headers.js

function getCrossOriginOpenerPolicyHeaders() {
  return {
    source: '/',
    headers: [
      {
        key: 'Cross-Origin-Opener-Policy',
        value: 'same-origin',
      },
    ],
  };
}

// To test these headers in your local environment,
// create a next.config and add the following rules to the next.config.js headers property.
module.exports = {
  getCrossOriginOpenerPolicyHeaders,
};