appendln
fun StringBuilder.appendln(it: String): StringBuilderfun StringBuilder.appendln(it: Boolean): StringBuilderfun StringBuilder.appendln(it: Byte): StringBuilderfun StringBuilder.appendln(it: Short): StringBuilderfun StringBuilder.appendln(it: Int): StringBuilderfun StringBuilder.appendln(it: Long): StringBuilderfun StringBuilder.appendln(it: Float): StringBuilderfun StringBuilder.appendln(it: Double): StringBuilderfun StringBuilder.appendln(it: Any?): StringBuilderfun StringBuilder.appendln(): StringBuilder