Llamar a API internas que tienen certificados privados

...

// Get AEM's KeyStoreService reference
@Reference
private com.adobe.granite.keystore.KeyStoreService keyStoreService;

...

// Get AEM TrustStore using KeyStoreService
KeyStore aemTrustStore = getAEMTrustStore(keyStoreService, resourceResolver);

if (aemTrustStore != null) {

    // Create SSL Context
    SSLContextBuilder sslbuilder = new SSLContextBuilder();

    // Load AEM TrustStore material into above SSL Context
    sslbuilder.loadTrustMaterial(aemTrustStore, null);

    // Create SSL Connection Socket using above SSL Context
    SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
            sslbuilder.build(), NoopHostnameVerifier.INSTANCE);

    // Create HttpClientBuilder
    HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
    httpClientBuilder.setSSLSocketFactory(sslsf);

    // Create HttpClient
    CloseableHttpClient httpClient = httpClientBuilder.build();

    // Invoke API
    closeableHttpResponse = httpClient.execute(new HttpGet(API_ENDPOINT));

    // Code that reads response code and body from the 'closeableHttpResponse' object
    ...
}

/**
 *
 * Returns the global AEM TrustStore
 *
 * @param keyStoreService OOTB OSGi service that makes AEM based KeyStore
 *                         operations easy.
 * @param resourceResolver
 * @return
 */
private KeyStore getAEMTrustStore(KeyStoreService keyStoreService, ResourceResolver resourceResolver) {

    // get AEM TrustStore from the KeyStoreService and ResourceResolver
    KeyStore aemTrustStore = keyStoreService.getTrustStore(resourceResolver);

    return aemTrustStore;
}

...