virtualSize method
Implementation
int virtualSize() {
return 8 +
varuint.encodingLength(inputs.length) +
varuint.encodingLength(outputs.length) +
inputs.fold(0, (sum, input) => sum + 40 + _varSliceSize(input.script)) +
outputs.fold(0, (sum, output) => sum + 8 + _varSliceSize(output.script));
}