          if model_field.allow_folders is not False:
              kwargs['allow_folders'] = model_field.allow_folders
  
      if model_field.choices:
          # If this model field contains choices, then return early.
          # Further keyword arguments are not valid.
          kwargs['choices'] = model_field.choices
          return kwargs
  
      # Our decimal validation is handled in the field code, not validator code.
      # (In Django 1.9+ this differs from previous style)
 
</s> remove     # Ensure that max_value is passed explicitly as a keyword arg,
    # rather than as a validator.
    max_value = next((
        validator.limit_value for validator in validator_kwarg
        if isinstance(validator, validators.MaxValueValidator)
    ), None)
    if max_value is not None and isinstance(model_field, NUMERIC_FIELD_TYPES):
        kwargs['max_value'] = max_value
        validator_kwarg = [
            validator for validator in validator_kwarg
            if not isinstance(validator, validators.MaxValueValidator)
        ]

    # Ensure that max_value is passed explicitly as a keyword arg,
    # rather than as a validator.
    min_value = next((
        validator.limit_value for validator in validator_kwarg
        if isinstance(validator, validators.MinValueValidator)
    ), None)
    if min_value is not None and isinstance(model_field, NUMERIC_FIELD_TYPES):
        kwargs['min_value'] = min_value
        validator_kwarg = [
            validator for validator in validator_kwarg
            if not isinstance(validator, validators.MinValueValidator)
        ]

    # URLField does not need to include the URLValidator argument,
    # as it is explicitly added in.
    if isinstance(model_field, models.URLField):
        validator_kwarg = [
            validator for validator in validator_kwarg
            if not isinstance(validator, validators.URLValidator)
        ]

    # EmailField does not need to include the validate_email argument,
    # as it is explicitly added in.
    if isinstance(model_field, models.EmailField):
        validator_kwarg = [
            validator for validator in validator_kwarg
            if validator is not validators.validate_email
        ]

    # SlugField do not need to include the 'validate_slug' argument,
    if isinstance(model_field, models.SlugField):
        validator_kwarg = [
            validator for validator in validator_kwarg
            if validator is not validators.validate_slug
        ]

    # IPAddressField do not need to include the 'validate_ipv46_address' argument,
    if isinstance(model_field, models.GenericIPAddressField):
        validator_kwarg = [
            validator for validator in validator_kwarg
            if validator is not validators.validate_ipv46_address
        ]

 </s> add  </s> remove         return kwargs

    # Our decimal validation is handled in the field code, not validator code.
    # (In Django 1.9+ this differs from previous style)
    if isinstance(model_field, models.DecimalField) and DecimalValidator:
        validator_kwarg = [
            validator for validator in validator_kwarg
            if not isinstance(validator, DecimalValidator)
        ]
 </s> add     else:
        # Ensure that max_value is passed explicitly as a keyword arg,
        # rather than as a validator.
        max_value = next((
            validator.limit_value for validator in validator_kwarg
            if isinstance(validator, validators.MaxValueValidator)
        ), None)
        if max_value is not None and isinstance(model_field, NUMERIC_FIELD_TYPES):
            kwargs['max_value'] = max_value
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, validators.MaxValueValidator)
            ]

        # Ensure that max_value is passed explicitly as a keyword arg,
        # rather than as a validator.
        min_value = next((
            validator.limit_value for validator in validator_kwarg
            if isinstance(validator, validators.MinValueValidator)
        ), None)
        if min_value is not None and isinstance(model_field, NUMERIC_FIELD_TYPES):
            kwargs['min_value'] = min_value
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, validators.MinValueValidator)
            ]

        # URLField does not need to include the URLValidator argument,
        # as it is explicitly added in.
        if isinstance(model_field, models.URLField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, validators.URLValidator)
            ]

        # EmailField does not need to include the validate_email argument,
        # as it is explicitly added in.
        if isinstance(model_field, models.EmailField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if validator is not validators.validate_email
            ]

        # SlugField do not need to include the 'validate_slug' argument,
        if isinstance(model_field, models.SlugField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if validator is not validators.validate_slug
            ]

        # IPAddressField do not need to include the 'validate_ipv46_address' argument,
        if isinstance(model_field, models.GenericIPAddressField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if validator is not validators.validate_ipv46_address
            ]
        # Our decimal validation is handled in the field code, not validator code.
        # (In Django 1.9+ this differs from previous style)
        if isinstance(model_field, models.DecimalField) and DecimalValidator:
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, DecimalValidator)
            ]
          if model_field.allow_folders is not False:
              kwargs['allow_folders'] = model_field.allow_folders
  
      if model_field.choices:


          kwargs['choices'] = model_field.choices
          return kwargs
  
      # Our decimal validation is handled in the field code, not validator code.
      # (In Django 1.9+ this differs from previous style)
keep keep keep keep replace replace keep keep keep keep keep
 fix unique=True validation for ChoiceField 
rest_framework/utils/field_mapping.py