public T headRowNumber(Integer headRowNumber) {
        parameter().setHeadRowNumber(headRowNumber);
        return self();
    }
Count the number of added heads when read sheet.

<p>
0 - This Sheet has no head ,since the first row are the data
<p>
1 - This Sheet has one row head , this is the default
<p>
2 - This Sheet has two row head ,since the third row is the data

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