code: def clear(self, cfgstr=None):
          
          data_fpath = self.get_fpath(cfgstr)
          if self.verbose > 0:
              self.log('[cacher] clear cache')
          if exists(data_fpath):
              if self.verbose > 0:
                  self.log('[cacher] removing {}'.format(data_fpath))
              os.remove(data_fpath)
  
              # Remove the metadata if it exists
              meta_fpath = data_fpath + '.meta'
              if exists(meta_fpath):
                  os.remove(meta_fpath)
          else:
              if self.verbose > 0:
                  self.log('[cacher] ... nothing to clear')
docs: Removes the saved cache and metadata from disk