let words = $objectWrappers.wrap($arrays.arrayOf($plugins.loadClass("java.lang.String"), "hello", "world", "kotlin"))
// 将每个单词转换为字符列表，并添加索引信息, 带索引的字符列表: [0_h, 0_e, 0_l, 0_l, 0_o, 1_w, 1_o, 1_r, 1_l, 1_d, 2_k, 2_o, 2_t, 2_l, 2_i, 2_n]
words.flatMapIndexed((index, word) =>
    $objectWrappers.wrap(word).map(c => index + "_" + c).getOrigin()
).forEach((it) => {
    $console.log(it)
})