Can you set a "required attribute" on control property?

[Cameron Eckman]

When creating a property for a server control can you set some sort of
"required attribute", so that the developer sees the browser message you see
when you leave off an attribute on a Microsoft control:

Parser Error
Description: An error occurred during the parsing of a resource required
to service this request.
Please review the following specific parse error
details and modify your source file appropriately.
Parser Error Message: The required attribute 'ContentPlaceHolderID' is
not found on 'Content' control.
Source Error:

For right now I am just throwing HttpParseException during the Init, but
that does not behave like Microsoft's controls.

Thanks.
Cameron