How can you denote the access modifiers "friend" and "protected friend" in UML?

Question

The symbols for access modifiers that I know are relevant for many different languages:

public:        +
private:       -
protected:  #
package:    ~ (or none)

However, in VB.NET there are other such access modifiers -- friend, and protected friend (these are called internal and protected internal in c#). What are the UML symbols for these access modifiers?

Is friend close enough to "package access" that it could be denoted with a tilde "~"? Would that then mean that protected friend could be denoted as "#~"?

Answer 1

According to CSU Santa Barbara's web site:

We sometimes need an operation that has full access to a classes private information and yet must not be applied to a single object. In C++, for example, we have "friend functions" and "friend operations". These are indicated by placing the stereotype "<<friend>>" in front of the operation in the UML class diagram.

So you just annotate it and it is understood by other UML users.