public ExcelReaderBuilder customObject(Object customObject) {
        readWorkbook.setCustomObject(customObject);
        return this;
    }
This object can be read in the Listener {@link AnalysisEventListener#invoke(Object, AnalysisContext)}
{@link AnalysisContext#getCustom()}

@param customObject
@return
fastexcel-core/src/main/java/cn/idev/excel/read/builder/ExcelReaderBuilder.java