getGrade method
Get grade by system name
Implementation
String? getGrade(String system) {
switch (system.toLowerCase()) {
case 'vscale':
case 'v_scale':
return vScale;
case 'yds':
return yds;
case 'french':
return french;
case 'font':
case 'fontainebleau':
return font;
case 'uiaa':
return uiaa;
default:
return null;
}
}