old_contents: from flask_restplus import fields
  from skf.api.restplus import api
  
  sprint = api.model('sprint', {
      'sprintID': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),
      'projectID': fields.String(required=True, description='The unique identifier of a sprint project'),
      'groupID': fields.String(required=True, description='The unique identifier of a sprint group'),
      'sprintName': fields.String(required=True, description='Sprint name'),
      'sprintDesc': fields.String(required=True, description='Sprint description'),
  })
  
  sprint_stats = api.model('sprint_stats', {
      'sprint_id': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),
      'sprint_name': fields.String(required=True, description='The name of a sprint'),
      'sprint_desc': fields.String(required=True, description='The description of a sprint'),
      'sprint_open': fields.Integer(readOnly=True, description='The count of open items per sprint'),
      'sprint_closed': fields.Integer(readOnly=True, description='The count of closed items per sprint'),
      'sprint_accepted': fields.Integer(readOnly=True, description='The count of accpeted items per sprint'),
  })
  
  page_of_sprint_items = api.inherit('Page of sprint items', {
      'items': fields.List(fields.Nested(sprint))
  })
  
  sprint_update = api.model('Sprint update', {
      'sprintID': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),
      'name': fields.String(required=True, description='Update sprint name'),
      'description': fields.String(required=True, description='Update sprint description'),
  })
  
  sprint_new = api.model('Sprint new', {
      'name': fields.String(required=True, description='New sprint name'),
      'description': fields.String(required=True, description='New sprint description'),
      'projectID': fields.String(required=True, description='The unique identifier of a sprint project'),
  })
  
  message = api.model('Response message', {
      'message': fields.String(required=True, description='Response message'),
      'sprintID': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),  
  })
  
new_contents: from flask_restplus import fields
  from skf.api.restplus import api
  
  sprint = api.model('sprint', {
      'sprintID': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),
      'projectID': fields.String(required=True, description='The unique identifier of a sprint project'),
      'groupID': fields.String(required=True, description='The unique identifier of a sprint group'),
      'sprintName': fields.String(required=True, description='Sprint name'),
      'sprintDesc': fields.String(required=True, description='Sprint description'),
  })
  
  sprint_stats = api.model('sprint_stats', {
      'sprint_id': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),
      'sprint_name': fields.String(required=True, description='The name of a sprint'),
      'sprint_desc': fields.String(required=True, description='The description of a sprint'),
      'sprint_open': fields.Integer(readOnly=True, description='The count of open items per sprint'),
      'sprint_closed': fields.Integer(readOnly=True, description='The count of closed items per sprint'),
      'sprint_accepted': fields.Integer(readOnly=True, description='The count of accepted items per sprint'),
      'sprint_items_total': fields.Integer(readOnly=True, description='The count of total available items in a sprint'),
  })
  
  page_of_sprint_items = api.inherit('Page of sprint items', {
      'items': fields.List(fields.Nested(sprint))
  })
  
  sprint_update = api.model('Sprint update', {
      'sprintID': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),
      'name': fields.String(required=True, description='Update sprint name'),
      'description': fields.String(required=True, description='Update sprint description'),
  })
  
  sprint_new = api.model('Sprint new', {
      'name': fields.String(required=True, description='New sprint name'),
      'description': fields.String(required=True, description='New sprint description'),
      'projectID': fields.String(required=True, description='The unique identifier of a sprint project'),
  })
  
  message = api.model('Response message', {
      'message': fields.String(required=True, description='Response message'),
      'sprintID': fields.Integer(readOnly=True, description='The unique identifier of a sprint item'),  
  })
  
subject: fix for sprint stats