code: def add(cls, module_name, fsts, composer):
          '''
          add a couple of fsts to be superimposed on the module given
          by module_name as soon as it is imported.
  
          internal - use featuremonkey.compose_later
          '''
          cls._to_compose.setdefault(module_name, [])
          cls._to_compose[module_name].append(
              (list(fsts), composer)
          )
          cls._install(f add(cls, module_name, fsts, composer):
          '''
          add a couple of fsts to be superimposed on the module given
          by module_name as soon as it is imported.
  
          internal - use featuremonkey.compose_later
          '''
          cls._to_compose.setdefault(module_name, [])
          cls._to_compose[module_name].append(
              (list(fsts), composer)
          )
          cls._install()
docs: add a couple of fsts to be superimposed on the module given
          by module_name as soon as it is imported.
  
          internal - use featuremonkey.compose_later