final Map<String, Object> contentMap = response.getContent(OpenSearchCurl.jsonParser());
                    if (logger.isDebugEnabled()) {
                        logger.debug("response: {}", contentMap);
                    }
                    if (contentMap.containsKey("value")) {
                        final String[] values = DocumentUtil.getValue(contentMap, "value", String[].class);

        // Test with Japanese characters
        String word = "日本語テスト";
        float boost = 2.0f;
        List<String> readings = Arrays.asList("ニホンゴテスト");
        List<String> fields = Arrays.asList("content_ja");
        List<String> tags = Arrays.asList("japanese");
        List<String> roles = Arrays.asList("admin");

        elevateWord = new ElevateWord(word, boost, readings, fields, tags, roles);

For example, this works correctly now:

```Python
from contextvars import ContextVar
from typing import Any, Dict, Optional


legacy_request_state_context_var: ContextVar[Optional[Dict[str, Any]]] = ContextVar(
    "legacy_request_state_context_var", default=None
)

async def set_up_request_state_dependency():