fee_estimator: &LowerBoundedFeeEstimator<F>, entropy_source: &ES, signer_provider: &SP,
counterparty_node_id: PublicKey, our_supported_features: &ChannelTypeFeatures,
their_features: &InitFeatures, msg: &msgs::OpenChannel, user_id: u128, config: &UserConfig,
fee_estimator: &LowerBoundedFeeEstimator<F>, entropy_source: &ES, signer_provider: &SP,
counterparty_node_id: PublicKey, our_supported_features: &ChannelTypeFeatures,
their_features: &InitFeatures, msg: &msgs::OpenChannel, user_id: u128, config: &UserConfig,