code: def find_top_level_modules_by_dunder_init(self):  # type: () -> List[str]
          
          # TODO: use package_dirs
          packaged_dirs = ""
          try:
              # Right now only returns 1st.
              packaged_dirs = self.extract_package_dir()
          except:
              pass
          likely_src_folders = [".", "src", "lib"]
          if packaged_dirs and packaged_dirs not in likely_src_folders:
              likely_src_folders.append(packaged_dirs)
  
          candidates = []
          for likely_src in likely_src_folders:
              if not os.path.isdir(likely_src):
                  continue
              folders = [
                  f
                  for f in os.listdir(likely_src)
                  if os.path.isdir(os.path.join(likely_src, f))
              ]
  
              for folder in folders:
                  if os.path.isfile(os.path.join(likely_src, folder, "__init__.py")):
                      # dunder_source = self.file_opener.read_file(folder + "/__init__.py")
                      candidates.append(folder)
  
          return list(set([x for x in candidates if x]))
docs: Find modules along side setup.py (or in current folder)
  
          Recreates what find_packages does.
          :return: