code: def dependencies(source):
      
      loader = ClassLoader(source, max_cache=-1)
      all_dependencies = set()
      for klass in loader.classes:
          new_dependencies = loader.dependencies(klass) - all_dependencies
          all_dependencies.update(new_dependencies)
          for new_dep in new_dependencies:
              click.echo(new_dep)
docs: Output a list of all classes referenced by the given source.