text: import graphene
  
  from .mutations import (
      InvoiceCreate,
      InvoiceDelete,
      InvoiceRequest,
      InvoiceRequestDelete,
      InvoiceSendNotification,
      InvoiceUpdate,
  )
  
  
  class InvoiceMutations(graphene.ObjectType):
      invoice_request = InvoiceRequest.Field()
      invoice_request_delete = InvoiceRequestDelete.Field()
      invoice_create = InvoiceCreate.Field()
      invoice_delete = InvoiceDelete.Field()
      invoice_update = InvoiceUpdate.Field()
      invoice_send_notification = InvoiceSendNotification.Field()
  