<?php
$words = $objectWrappers->wrap($arrays->arrayOf($plugins->loadClass("java.lang.String"), "hello", "world", "kotlin", "android"));
// 按单词长度分组，并获取每个分组的大小,每个分组的大小: {5=2, 6=1, 7=1})
$words->groupingBy(function ($it) use ($objectWrappers) {
    return $objectWrappers->wrap($it)->count();
})->eachCount()->forEach(function ($it) use ($console) {
    $console->log($it);
});