DeclarationMirror's qualifiedName getter returns a symbol with a name that is the concatenation of the library name, enclosing scope name (if any) and the declaration's own name.

That means that you can get a name like "a.b.c" and not know if it's the library "a.b.c" or the variable "c" in the library "a.b".

I suggest changing the result of getName on such a symbol to be, e.g., "a.b#c" and "a.b#Foo#bar", so that it a) doesn't look like correct syntax and b) is easier to understand.