text: from typing import Dict, Optional
  
  from marshmallow.exceptions import ValidationError
  
  __all__ = ('StarRestError', 'DumpError', 'DecodeError')
  
  
  class StarRestError(Exception):
      pass
  
  
  class DumpError(StarRestError):
  
      def __init__(self, exc: Optional[Exception] = None, *args):
          super().__init__(*args)
          self.orig_exc = exc
  
      def normalized_messages(self) -> Dict:
          if self.orig_exc is not None and isinstance(self.orig_exc, ValidationError):
              return self.orig_exc.normalized_messages()
  
          return {'_schema': 'Error dump content'}
  
  
  class DecodeError(StarRestError):
  
      def normalized_messages(self) -> Dict:
          return {'_body': str(self)}
  