request_definition is empty for java

I took the repo in tests for java (clickhouse-highlevel-sinker) and cloned it locally and tested it. result is empty. Any reason so ?

import asyncio
from multilspy import SyncLanguageServer, LanguageServer
from multilspy.multilspy_config import MultilspyConfig
from multilspy.multilspy_logger import MultilspyLogger
from pathlib import PurePath

async def main():
    config = MultilspyConfig.from_dict({"code_language": "java"}) 
    logger = MultilspyLogger()
    lsp = LanguageServer.create(config, logger, "/home/saiteja/testing_repos/clickhouse-highlevel-sinker")
    
    async with lsp.start_server():
        result = await lsp.request_definition(
            str(PurePath("/home/saiteja/testing_repos/clickhouse-highlevel-sinker/src/main/java/com/xlvchao/clickhouse/component/ClickHouseSinkManager.java")),
            44,  # Line number of the symbol
            59   # Column number of the symbol
        )
    
        print("result", result)

if __name__ == "__main__":
    asyncio.run(main())

Reproduce the Java case using the provided clickhouse-highlevel-sinker path and the request_definition call in the issue. Start by checking the Java language-server configuration and the specified file, line, and column, then compare the returned result with the expected definition response. Done means the cause is identified and request_definition returns the correct definition or the limitation is documented.