code: def add_layer_from_env(self):
          
          self.add_layer()
          for attribute in self.get_attributes():
              env_attribute = os.environ.get('FJS_{}'.format(attribute))
              if env_attribute:
                  setattr(self, attribute, env_attribute)
docs: This function creates a new layer, gets a list of all the
          current attributes, and attempts to find matching environment variables
          with the prefix of FJS\_. If matches are found it sets those attributes
          in the new layer.