anchor.diff:  delete_user_db(User) ->
       UserDb = user_db_name(User),
       try
  -        fabric_db_delete:go(UserDb, [admin_ctx()])
  +        fabric_db_delete:go(UserDb, [?ADMIN_CTX])
       catch error:database_does_not_exist ->
           ok
       end,
  
positive.code:     {false, _} ->
          ok;
      {true, SecProps1} ->
          fabric_db_meta:set_security(UserDb, {SecProps1}, [admin_ctx()])
      end.
  
  user_db_name(User) ->
  
negative.code:     try
          fabric_db_info:go(UserDb)
      catch error:database_does_not_exist ->
          fabric_db_create:go(UserDb, [?ADMIN_CTX])
      end,
      UserDb.
  
  