anchor.diff:  			       [Address, Unknown]),
   		    error
   	    end;
  -	{atomic, [User]} ->
  +	{atomic, [_User]} ->
   	    %% There exists exactly one user with this name. Return the name of the user,
   	    %% not the user record returned from phone:get_user().
   	    Address;
  
positive.code:     end.
  
  
  %% Function: get_addresses_for_users/1
  %% Description: Iterate over a list of users, return all their
  %%              addresses without duplicates. Uses the next function,
  %%              get_addresses_for_user/1.
  %% Returns: ListOfAddresses
  %%--------------------------------------------------------------------
  get_addresses_for_users([]) ->
      [];
  
negative.code: 	    error
      end.
  
  %%--------------------------------------------------------------------
  %% Function: get_telephonenumber_for_user(User)
  %%           User = string()
  %% Descrip.: Return the telephone number for a user. We do this by
  %%           fetching all addresses for the user and then examining
  %%           them to see if any of them is a tel: URL, or has a
  %%           user part which is all numeric or is an E.164 number.
  %%           The numbering plan in the number return is not specified.
  %% Returns : Number  |
  %%           nomatch
  %%           Number = string()
  %%--------------------------------------------------------------------
  get_telephonenumber_for_user(User) ->
      case phone:get_numbers_for_user(User) of
  	{atomic, [FirstNumber | _]} ->
  