Method getProvider

base/src/main/java/net/time4j/tz/Timezone.java:1747–1758

(String provider)

    }

    private static ZoneModelProvider getProvider(String provider) {

        if (provider.isEmpty()) {
            throw new IllegalArgumentException("Missing zone model provider.");
        }

        return (
            provider.equals(NAME_DEFAULT)
            ? DEFAULT_PROVIDER
            : PROVIDERS.get(provider));

    }

    private static ZoneModelProvider compareTZDB(
        ZoneModelProvider provider,