anchor.diff:           keep_set_options/2,
            no_sensitive/2,
            initial_default_algorithms/2,
  -         check_preferred_algorithms/1
  +         check_preferred_algorithms/1,
  +         merge_options/3
           ]).
   
   -export_type([private_options/0
  
positive.code:                     {error, {EO,{KV,Reason}}}
              end
      end.
  
  cnf_key(server) -> server_options;
  cnf_key(client) -> client_options.
  
negative.code: 
          %% Enter the user's values into the map; unknown keys are
          %% treated as socket options
          check_and_save(OptsList2, OptionDefinitions, InitialMap)
  
      catch
          error:{EO, KV, Reason} when EO == eoptions ; EO == eerl_env ->
              if
  