anchor.diff:  
   remove_binding(_, _, Xs, []) ->
     Xs;
  +
   remove_binding(X, Cs, Xs, [B | ListTail]) ->
     case pgsql_unlisten(X, B, Cs, Xs) of
       {ok, []} -> [];
  
positive.code:       V
    end.
  
  
  get_param(Args, Name, Default) when is_atom(Name) ->
    get_param_value(Args, atom_to_list(Name), Default);
  
  
negative.code: get_param_env_value(Name, Default) when is_list(Name) ->
    get_env(list_to_atom(Name), Default).
  
  get_param_list_value(Value) when is_binary(Value) ->
    binary_to_list(Value);
  
  