getBool method
Implementation
bool? getBool(dynamic key, {bool? defaultValue}) {
final value = this[key];
if (value is bool) return value;
if (value is String) {
if (value.toLowerCase() == 'true') return true;
if (value.toLowerCase() == 'false') return false;
}
if (value is int) return value != 0;
return defaultValue;
}