code: @Nonnull
    @Deprecated
    public AS2ClientBuilder setPKCS12KeyStore (@Nullable final File aKeyStoreFile,
                                               @Nullable final String sKeyStorePassword)
    {
      return setKeyStore (EKeyStoreType.PKCS12, aKeyStoreFile, sKeyStorePassword);
    }
docs: Set the key store file and password for the AS2 client. The key store must
  be an existing file of type PKCS12 containing at least the key alias of the
  sender (see {@link #setSenderAS2ID(String)}). The key store file must be
  writable as dynamically certificates of partners are added.
  
  @param aKeyStoreFile
  The existing key store file. Must exist and may not be
  <code>null</code>.
  @param sKeyStorePassword
  The password to the key store. May not be <code>null</code> but
  empty.
  @return this for chaining