text: from elementalcms.persistence.repositories import SnippetsRepository
  from elementalcms.services import UseCaseResult, NoResult, Success
  from elementalcms.core import MongoDbContext
  
  
  class GetOne:
      __db_context: MongoDbContext
  
      def __init__(self, db_context: MongoDbContext):
          self.__db_context = db_context
  
      def execute(self, _id) -> UseCaseResult:
          repo = SnippetsRepository(self.__db_context)
          snippet = repo.find_one(_id)
          if snippet is None:
              return NoResult()
          return Success(snippet)
  