toSingularName function
Convert field name to singular format
Implementation
String toSingularName(String s) => s.endsWith('ies')
? '${s.substring(0, s.length - 3)}y'
: s.endsWith('ses') || s.endsWith('oes')
? '${s.substring(0, s.length - 2)}'
: s.endsWith('s')
? s.substring(0, s.length - 1)
: s;