code: function () {
          var obj = PropertyBase.toJSON(this);
  
          _.unset(obj, 'key.value');
          _.unset(obj, 'cert.value');
          _.unset(obj, 'pfx.value');
  
          return obj;
      }
docs: Allows the serialization of a {@link Certificate}
  
  This is overridden, in order to ensure that certificate contents are not accidentally serialized,
  which can be a security risk.