initSpecVersionFromFile method
Initialize the SpecVersions from a Json file path containing spec-versions
After reading Spec Versions then it calls addSpecVersion(spec) with spec being the parsed Spec from file.
Implementation
Future<void> initSpecVersionFromFile(String filePath) async {
final list = await readSpecVersionsFromFilePath(filePath);
for (var spec in list) {
addSpecVersion(spec);
}
}