filterInputs

Find inputs in this wallet to use in a new transaction. This does NOT mark them as used, so cannot be called repeatedly until consumeInputs is called Pass a filter to select a subset of the available UTXOs. This passed function should return the amount "filled" by this input in units of the minAmt parameter. Return 0 to not use this input. Typically what is returned is satoshis, but if you wanted N inputs (irrespective of the amount in them) you could pass N for minAmt, and return 1 in your function. Or you could filter by tokens and return the token amount rather than the satoshi amount...