In CustomValidationAttribute description of validatorType is useless

### Type of issue

Lack of information

### Description

Hi,

Trying to implement a custom validation attribute deriving from [CustomValidationAttribute](https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations.customvalidationattribute), the [documentation on the constructor](https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations.customvalidationattribute.-ctor) does not say anything useful about the validatorType.
Does it have to implement a certain interface ? be of a certain type ?

I ended up deriving ValidationAttribute which more suited my need.
Nevertheless, the documentation could be improved.

Can somebody add some more information ?

Scal

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations.customvalidationattribute.-ctor?view=net-9.0

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.ComponentModel.DataAnnotations/CustomValidationAttribute.xml

### Document Version Independent Id

b2df589f-3424-b320-aad2-5f5381b18fcb

### Article author

@dotnet-bot