firstLeafValue function
Implementation
dynamic firstLeafValue({required ASN1Object block}) {
var sub = block.sub;
if (sub != null && sub.length > 0) {
ASN1Object? subFirst;
try {
subFirst = sub.first;
} catch (e) {}
if (subFirst != null) {
return firstLeafValue(block: subFirst);
}
}
return block.value;
}