如何将ImmutableList<Number>写入文件？

import com.google.common.collect.ImmutableList;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;

ImmutableList<Number> numbers = ImmutableList.of(1, 2, 3, 4, 5);

String filePath = "path/to/file.txt";
try (FileWriter fileWriter = new FileWriter(filePath);
     BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)) {
    // 写入文件的代码将放在这里
} catch (IOException e) {
    e.printStackTrace();
}

try (FileWriter fileWriter = new FileWriter(filePath);
     BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)) {
    for (Number number : numbers) {
        bufferedWriter.write(number.toString());
        bufferedWriter.newLine();
    }
} catch (IOException e) {
    e.printStackTrace();
}