code: public PKSigningInformation loadSigningInformation(final String keyStoreFilePath,
                                                         final String keyStorePassword,
                                                         final String appleWWDRCAFilePath) throws PKSigningException {
          try {
              return loadSigningInformationFromPKCS12AndIntermediateCertificate(keyStoreFilePath, keyStorePassword, appleWWDRCAFilePath);
          } catch (IOException | CertificateException e) {
              throw new PKSigningException("Failed to load signing information", e);
          }
      }
docs: Load all signing information necessary for pass generation from the filesystem or classpath.
  
  @param keyStoreFilePath
  path to keystore (classpath or filesystem)
  @param keyStorePassword
  Password used to access the key store
  @param appleWWDRCAFilePath
  path to apple's WWDRCA certificate file (classpath or filesystem)
  @return
  a {@link PKSigningInformation} object filled with all certificates from the provided files
  @throws PKSigningException