getLightningFeeEstimateForNode     
  suspend fun getLightningFeeEstimateForNode(destinationNodePublicKey: String, amountMsats: Long): CurrencyAmount
Returns an estimate of the fees that will be paid to send a payment to another Lightning node.
Parameters
destinationNodePublicKey   
The public key of the node that you want to pay.
amountMsats 
The payment amount expressed in msats.
Throws
If the user is not authenticated.