attributeStringOf

auto visitor = visitImports(q{
    public import foo;
    public static import bar;
    package(std.regex) import baz;
  });
auto ids = visitor.importGroups[0];
assert(ids[0].fullName == "foo");
assert(equal(ids[0].attrs, ["public"]));
assert(ids[1].fullName == "bar");
assert(equal(ids[1].attrs, ["public", "static"]));
assert(ids[2].fullName == "baz");
assert(equal(ids[2].attrs, ["package(std.regex)"]));