module-project-validator/Editor/Validators/Attributes/AttributeValidatorObsolete.cs

using System;

namespace Module.ProjectValidator.Editor
{
    internal sealed class AttributeValidatorObsolete : IAttributeValidator<ObsoleteAttribute>
    {
        public ValidatorResult Validate(ObsoleteAttribute attribute, object value)
        {
            return ValidatorResult.Create(EValidatorSeverity.Error, "Obsolete");
        }
    }
}