docs: def put_path(self, path):
          """
          Given path identify in which environment the path belong to and
          append it.
          """
          if self.is_package(path):
              logger.debug('PYTHON PACKAGE: {}'.format(path))
              self.python_paths.append(path.parent)
              site.addsitedir(str(path.parent))
              xbmdirs = self.get_directories_with_extensions(
                  path,
                  self.icon_extensions,
              )
              self.xbmlang_paths.extend(xbmdirs)
              return
  
          if self.has_next(path.glob('*.' + self.MEL)):
              logger.debug('MEL: {}'.format(str(path)))
              self.script_paths.append(path)
  
          if self.has_next(path.glob('*.' + self.PYTHON)):
              logger.debug('PYTHONPATH: {}'.format(str(path)))
              self.python_paths.append(path)
              site.addsitedir(str(path))
  
          if self.PLUGIN in list(path.iterdir()):
              logger.debug('PLUG-IN: {}'.format(str(path)))
              self.plug_in_paths.append(path)
  
          for ext in self.icon_extensions:
              if self.has_next(path.glob('*.' + ext)):
                  logger.debug('XBM: {}.'.format(str(path)))
                  self.xbmlang_paths.append(path)
                  break