code: def find_loader(kwargs):
      """
      R dataset implementation of data loader which will return a function if any of the
      `click` options based on LOADER_KEY & LOADER_PROPS have been used, otherwise return None
  
      :param kwargs: Optional keyword arguments to be passed from `click`
      :return: data loader function for R dataset implementation
      """
      r_opts = get_loader_options(LOADER_KEY, LOADER_PROPS, kwargs)
      if len([f for f in r_opts.values() if f]):
  
          def _r_loader():
              return loader_func(**r_opts)
  
          return _r_loader
      return None
  
imports: from six import PY3
  from dtale.app import show
  from dtale.cli.clickutils import get_loader_options
label_desc: Use image node_id 3 for calling a global function with example usage: find_loader(kwargs) and returns: None, _r_loader, loader_func