Filter out common object functions

[Inquie via Digitalmars-d-learn]

I am iterating over the members of classes and interfaces and get 
things like hash, this, etc. These are causing problems in my 
code. I would like to get only the "specified" members.

While I can filter out

__traits(allMembers, T);

using Erase, it is tedius and error prone.

Is there a way to get only the immediate members? Non-inherited, 
and "common"(for a lack of a better word), this(), for example, 
is specified by the language... i don't need it, just functions 
the user specifies in the type.