addIrregularInflectionRule method
Implementation
void addIrregularInflectionRule(String presentOrParticiple, String past) {
_inflectionRules.add([
new RegExp(
r'^(back|dis|for|fore|in|inter|mis|off|over|out|par|pre|re|type|un|under|up)?' +
presentOrParticiple +
r'$',
caseSensitive: false),
(Match m) => (m[1] == null) ? past : m[1]! + past
]);
}