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sanity check
git-svn-id: https://public-transport-enabler.googlecode.com/svn/trunk@34 0924bc21-9374-b0fa-ee44-9ff1593b38f0
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1 changed files with 3 additions and 1 deletions
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@ -106,7 +106,9 @@ public final class NetworkProviderFactory
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public static String networkId(final NetworkProvider provider)
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public static String networkId(final NetworkProvider provider)
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{
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{
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if (provider instanceof VbbProvider)
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if (provider == null)
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throw new IllegalArgumentException("null provider");
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else if (provider instanceof VbbProvider)
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return VbbProvider.NETWORK_ID;
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return VbbProvider.NETWORK_ID;
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else if (provider instanceof RmvProvider)
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else if (provider instanceof RmvProvider)
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return RmvProvider.NETWORK_ID;
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return RmvProvider.NETWORK_ID;
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