docs: public final PrivateKey lazyGetOurPrivateKey() throws Exception {
      if (this.ourPrivateKey == null && lazyGetKeystore() != null) {
        KeyStore.ProtectionParameter protParam = new KeyStore.
          PasswordProtection(this.ksPassword);
        KeyStore.PrivateKeyEntry pkEntry = (KeyStore.PrivateKeyEntry)
          this.keyStore.getEntry("AJettyFileExch" + this.ajettyIn, protParam);
        this.ourPrivateKey = pkEntry.getPrivateKey();
      }
      return this.ourPrivateKey;
    }