code: def save(self, filename, strip_prefix=''):
          
          arg_dict = {}
          for param in self.values():
              weight = param._reduce()
              if not param.name.startswith(strip_prefix):
                  raise ValueError(
                      "Prefix '%s' is to be striped before saving, but Parameter's "
                      "name '%s' does not start with '%s'. "
                      "this may be due to your Block shares parameters from other "
                      "Blocks or you forgot to use 'with name_scope()' when creating "
                      "child blocks. For more info on naming, please see "
                      "http://mxnet.incubator.apache.org/tutorials/basic/naming.html"%(
                          strip_prefix, param.name, strip_prefix))
              arg_dict[param.name[len(strip_prefix):]] = weight
          ndarray.save(filename, arg_dict)
docs: Save parameters to file.
  
          Parameters
          ----------
          filename : str
              Path to parameter file.
          strip_prefix : str, default ''
              Strip prefix from parameter names before saving.