@Override
    public String toString() {
        return "ReadSheet{" + "sheetNo=" + sheetNo + ", sheetName='" + sheetName
            + ", sheetHidden='" + sheetHidden + ", sheetVeryHidden='" + sheetVeryHidden + '\'' + "} " + super.toString();
    }
The number of rows to read, the default is all, start with 0.
fastexcel-core/src/main/java/cn/idev/excel/read/metadata/ReadSheet.java