@Override
    public void preprocessVariables(@NotNull ChainVariable inVar, @NotNull ChainVariable outVar, @NotNull OptionalToIfContext context) {
      if (SourceOperation.getSourceName(myArg) == null) FunctionHelper.suggestFromExpression(outVar, context.getProject(), myArg);
    }
@Override
    public void preprocessVariables(@NotNull ChainVariable inVar, @NotNull ChainVariable outVar, @NotNull OptionalToIfContext context)