isNormalizable method
Checks if the input string is ENS normalizable
(i.e. normalize(name)
will not raise DisallowedSequence
).
e.g
ENSNormalize ensn = await ENSNormalize.getInstance();
ensn.isNormalizable('Nick.ETH'); // true
Implementation
bool isNormalizable(String name) {
return ensProcess(name).error == null;
}