yearMonth

import kotlinx.datetime.LocalDate
import kotlinx.datetime.LocalDateTime
import kotlinx.datetime.YearMonth
import kotlinx.datetime.format.DayOfWeekNames
import kotlinx.datetime.format.MonthNames
import kotlinx.datetime.format.Padding
import kotlinx.datetime.format.alternativeParsing
import kotlinx.datetime.format.char
import kotlin.test.Test

fun main() { 
   //sampleStart 
   // Using a predefined format for a year-month in a larger custom format
val format = LocalDate.Format {
    yearMonth(YearMonth.Formats.ISO)
    chars(", ")
    dayOfWeek(DayOfWeekNames.ENGLISH_ABBREVIATED)
    char(' ')
    dayOfMonth()
}
check(format.format(LocalDate(2021, 1, 13)) == "2021-01, Wed 13") 
   //sampleEnd
}