@Override
    public void invokeHead(Map<Integer, ReadCellData<?>> headMap, AnalysisContext context) {
        log.info("Parsed a header row: {}", JSON.toJSONString(headMap));
    }
This method will return the header row line by line.

@param headMap The header map containing column index and cell data.
@param context The analysis context.
fastexcel-test/src/test/java/cn/idev/excel/test/demo/read/DemoExceptionListener.java