old_contents: from openfisca_core.entities import Entity, Role
  
  
  class GroupEntity(Entity):
      """Represents an entity containing several other entities with different roles.
  
      A :class:`.GroupEntity` represents an :class:`.Entity` containing
      several other :class:`.Entity` with different :class:`.Role`, and on
      which calculations can be run.
  
      Args:
          key: A key to identify the group entity.
          plural: The ``key``, pluralised.
          label: A summary description.
          doc: A full description.
          roles: The list of :class:`.Role` of the group entity.
          containing_entities: The list of keys of group entities whose
          members are guaranteed to be a superset of this group's entities.
  
      .. versionchanged:: 3.7.0
          Added ``containing_entities``, that allows the defining of group entities
          which entirely contain other group entities.
  
      """
  
      def __init__(self, key, plural, label, doc, roles, containing_entities = ()):
          super().__init__(key, plural, label, doc)
          self.roles_description = roles
          self.roles = []
          for role_description in roles:
              role = Role(role_description, self)
              setattr(self, role.key.upper(), role)
              self.roles.append(role)
              if role_description.get('subroles'):
                  role.subroles = []
                  for subrole_key in role_description['subroles']:
                      subrole = Role({'key': subrole_key, 'max': 1}, self)
                      setattr(self, subrole.key.upper(), subrole)
                      role.subroles.append(subrole)
                  role.max = len(role.subroles)
          self.flattened_roles = sum([role2.subroles or [role2] for role2 in self.roles], [])
          self.is_person = False
          self.containing_entities = containing_entities
  
new_contents: from openfisca_core.entities import Entity, Role
  
  
  class GroupEntity(Entity):
      """Represents an entity containing several other entities with different roles.
  
      A :class:`.GroupEntity` represents an :class:`.Entity` containing
      several other :class:`.Entity` with different :class:`.Role`, and on
      which calculations can be run.
  
      Args:
          key: A key to identify the group entity.
          plural: The ``key``, pluralised.
          label: A summary description.
          doc: A full description.
          roles: The list of :class:`.Role` of the group entity.
          containing_entities: The list of keys of group entities whose
              members are guaranteed to be a superset of this group's entities.
  
      .. versionchanged:: 35.7.0
          Added ``containing_entities``, that allows the defining of group entities
          which entirely contain other group entities.
  
      """
  
      def __init__(self, key, plural, label, doc, roles, containing_entities = ()):
          super().__init__(key, plural, label, doc)
          self.roles_description = roles
          self.roles = []
          for role_description in roles:
              role = Role(role_description, self)
              setattr(self, role.key.upper(), role)
              self.roles.append(role)
              if role_description.get('subroles'):
                  role.subroles = []
                  for subrole_key in role_description['subroles']:
                      subrole = Role({'key': subrole_key, 'max': 1}, self)
                      setattr(self, subrole.key.upper(), subrole)
                      role.subroles.append(subrole)
                  role.max = len(role.subroles)
          self.flattened_roles = sum([role2.subroles or [role2] for role2 in self.roles], [])
          self.is_person = False
          self.containing_entities = containing_entities
  
subject: Fix argument indentation in group entity doc