👁️‍🗨️文本块

类似于groovy的文本框，之前的JDK版本中要定义多行字符串需要字符串拼接，而且格式对齐在视觉上并不是很友好， 在JDK13中可以通过如下方式定义：

// JDK13之前
String content = "{\n"
    + "    \"upperSummary\": null,\n"
    + "    \"sensitiveTypeList\": null,\n"
    + "    \"gmtModified\": \"2011-08-05 10:50:09\",\n"
    + "    \"lowerGraph\": null,\n"
    + "    \"signature\": \"\",\n"
    + "    \"appName\": \"xxx\",\n"
    + "    \"lowerSummary\": null,\n"
    + "    \"gmtCreate\": \"2011-08-05 10:50:09\",\n"
    + "    \"type\": \"CALL\",\n"
    + "    \"name\": \"xxxx\",\n"
    + "    \"subType\": \"yyy\",\n"
    + "    \"id\": 1,\n"
    + "    \"projectId\": 1,\n"
    + "    \"status\": 1\n"
    + "}";

String content13 = """
{
    "upperSummary": null,
    "sensitiveTypeList": null,
    "gmtModified": "2011-08-05 10:50:09",
    "lowerGraph": null,
    "signature": "",
    "appName": "xxx",
    "lowerSummary": null,
    "gmtCreate": "2011-08-05 10:50:09",
    "type": "CALL",
    "name": "xxxx",
    "subType": "yyy",
    "id": 1,
    "projectId": 1,
    "status": 1
}
""";