Laravel 导入文件时如何跳过第一行

我正在try 使用Maatwebsite-excel版本3.1导入Laravel版本5.7中的.xlsx文件.我想要实现的是跳过文件的第一行，以避免在数据库中导入列标题.

I've tried to use version 2 syntax, calling the skip() method.

public function voter_import(Request $request)
{
    if (empty($request->file('file')->getRealPath())) 
    {
        return back()->with('success','No file selected');
    }
    else 
    {
        Excel::import(new VotersImport, $request->file('file'))->skip(1);
        return response('Import Successful, Please Refresh Page');
    }
}

class VotersImport implements ToModel
{
public function model(array $row)
   {
    return new Voter([
      'fname'          =>  $row[0],
      'lname'          =>  $row[1],
      'phone'          =>  $row[2],
      'gender'         =>  $row[3],
      'state'          =>  $row[4],
      'occupation'     =>  $row[5],
      'address'        =>  $row[6],
      'vin'            =>  $row[7],
      'dob'            =>  $row[8],
      'campaign_id'    =>  $row[9],
    ]);
   }
}

error message:

Call to undefined method Maatwebsite\Excel\Excel::skip()