docs: private static ImmutableList<ImportTree> getWildcardImports(List<? extends ImportTree> imports) {
      ImmutableList.Builder<ImportTree> result = ImmutableList.builder();
      for (ImportTree tree : imports) {
        // javac represents on-demand imports as a member select where the selected name is '*'.
        Tree ident = tree.getQualifiedIdentifier();
        if (!(ident instanceof MemberSelectTree)) {
          continue;
        }
        MemberSelectTree select = (MemberSelectTree) ident;
        if (select.getIdentifier().contentEquals("*")) {
          result.add(tree);
        }
      }
      return result.build();
    }