flexible method
Implementation
Flexible flexible({int? flex, FlexFit? flexFit})
{
if (flex == null && flexFit == null) {
return Flexible(child: this);
} else if (flex != null && flexFit == null) {
return Flexible(flex: flex, child: this);
} else if (flex == null && flexFit != null) {
return Flexible(fit: flexFit, child: this);
} else {
return Flexible(flex: flex!, fit: flexFit!, child: this);
}
}