W0016 - Deprecated Function

Error

  main() ->
    b:not_ok_to_use().
%%  ^^^^^^^^^^^^^^^^^ 💡 warning: Function 'not_ok_to_use/0' is deprecated.

Explanation

The warning message indicates that the invoked function is deprecated, which means it is no longer recommended for use.

To fix the problem you should investigate why the function is deprecated and whether there is an alternative function that can be used instead. You may need to refer to documentation to determine the best course of action.

A function is usually deprecated via the -deprecated attribute. This analysis is very similar to the deprecated_function_calls analysis performed by the XRef cross-reference tool.

There is currently no support for the -ignore_xref attribute used by rebar3 to silent specific instances of this diagnostic. Instead, the standard elp:ignore mechanism should be used.