finds a channel with the given id and contract hash and returns it , or returns null . concode_field_sep Logger log concode_elem_sep TransactionBroadcaster announcePeerGroup concode_elem_sep Transaction contract concode_elem_sep ECKey myKey concode_elem_sep Timer channelTimeoutHandler concode_elem_sep boolean active concode_elem_sep String EXTENSION_ID concode_elem_sep Wallet containingWallet concode_elem_sep ReentrantLock lock concode_elem_sep BigInteger valueToMe concode_elem_sep BigInteger refundFees concode_elem_sep Sha256Hash id concode_elem_sep Transaction close concode_elem_sep HashMultimap<Sha256Hash,StoredClientChannel> mapChannels concode_elem_sep Transaction refund concode_field_sep long getSecondsUntilExpiry concode_elem_sep void putChannel concode_elem_sep void putChannel concode_elem_sep void removeChannel concode_elem_sep boolean isWalletExtensionMandatory concode_elem_sep BigInteger getBalanceForServer concode_elem_sep void deserializeWalletExtension concode_elem_sep String getWalletExtensionID concode_elem_sep StoredClientChannel getUsableChannelForServerID concode_elem_sep byte[] serializeWalletExtension concode_elem_sep String toString concode_elem_sep String toString concode_elem_sep long expiryTimeSeconds concode_elem_sep StoredPaymentChannelClientStates getFromWallet