code: function findBiggestUtxo(utxos) {
    var largestAmount = 0;
    var largestIndex = 0;
  
    for (var i = 0; i < utxos.length; i++) {
      var thisUtxo = utxos[i];
  
      if (thisUtxo.satoshis > largestAmount) {
        largestAmount = thisUtxo.satoshis;
        largestIndex = i;
      }
    }
  
    return utxos[largestIndex];
  }
docs: SUPPORT/PRIVATE FUNCTIONS BELOW Returns the utxo with the biggest balance from an array of utxos.