How to customize autoGroupColumnDef's headerGroup cell?

问题

I have a AG-grid set up with autoGroup and other column groups. I am able to set the group names on the other columns but not the first column, which is the auto group. How do I access the first cell? In the plunker example, the cell above 'test'.

https://plnkr.co/edit/LgOOxMJpGwDcMdIq4Y5j?p=preview

<AgGridReact
            // autoGroupColumnDef={this.state.columnDefs}
            columnDefs={this.state.columnDefs}
            frameworkComponents={this.state.frameworkComponents}
            rowData={this.state.rowData}
            defaultColDef={this.state.defaultColDef}
            onGridReady={this.onGridReady}
            rowGroup
            autoGroupColumnDef={{
              headerName: 'test',
              width: 100,
            }}
          />

| cant customize | group1 name |

| custom header | column1 | column2 |

autoGroupColumnDef doesn't seem to work the same as the regular columnDef

来源：https://stackoverflow.com/questions/56385704/how-to-customize-autogroupcolumndefs-headergroup-cell