private boolean hasAttachment( ScenarioModel scenarioModel ) {
        return hasAttachment( scenarioModel.getCase( 0 ) );
    }
Deletes all steps of scenario cases where a data table
is generated to reduce the size of the data file. 
In this case only the steps of the first scenario case are actually needed.
jgiven-html5-report/src/main/java/com/tngtech/jgiven/report/html5/Html5ReportGenerator.java