text: from flask_restplus import Api
  from flask import Blueprint
  
  from .main.controller.song_controller import api as song_ns
  
  blueprint = Blueprint('api', __name__)
  
  api = Api(blueprint,
            title='STELLA DOWNLOADER API',
            version='1.0',
            description='Flask RESTplus API for downloading and converting Youtube videos to mp3.'
            )
  
  api.add_namespace(song_ns, path='/song')