Mastering refactoring - Inline function, starting code

inline_function_starting.kt

private fun printInvoiceSheet(invoice: Invoice) {
    printInvoiceHeader(invoice)
    val fullName = getFullName(invoice)
    binding.tvInvoicePreview.append(fullName)
    val address = getAddress(invoice)
    binding.tvInvoicePreview.append(address)
}

private fun getFullName(invoice: Invoice): String {
    val fullName =
    "First Name: ${invoice.customer.firstName}\nLast Name: ${invoice.customer.lastName}\n"
    return fullName
}

private fun getAddress(invoice: Invoice) : String {
    val address = "Address: ${invoice.customer.address}\n"
    return address
}