*
* [`EcdsaChannelSigner`]: crate::sign::EcdsaChannelSigner
* [`EcdsaChannelSigner::sign_holder_htlc_transaction`]: crate::sign::EcdsaChannelSigner::sign_holder_htlc_transaction
*
* [`EcdsaChannelSigner`]: crate::sign::EcdsaChannelSigner
* [`EcdsaChannelSigner::sign_holder_htlc_transaction`]: crate::sign::EcdsaChannelSigner::sign_holder_htlc_transaction