title: Trying to add download button
body: <p>I'm working in a project and I'm trying to add a download button but I can't find the way. I am showing part of the code where I want to add the button.</p>
  <pre><code>        axios.post(&quot;/notas&quot;,data)
              .then(response =&gt; {
                  //console.log(response.data);
                  const cols = [];
                  const rows = [];
                  response.data.columns.forEach((col,index)=&gt;{
                      cols.push({
                          title: col,
                          dataIndex:col.toLowerCase(),
                          key:col.toLoweSrCase()
                          button: &lt;button onClick={activateLasers}&gt;  Activate Lasers
                          &lt;/button&gt;
  
                      })
                  });
                  console.log(cols);
                  response.data.data.forEach((row,index)=&gt;{
                      let newRow = {key:index+1};
                      row.forEach((elem,index)=&gt; {
                          //console.log(cols[index]);
                          newRow[cols[index].key] = elem;
                      });
                      rows.push(newRow);
                  });
                  console.log(rows);
                  this.setState({
                      loading:false,
                      notas:{
                          columns:cols,
                          dataSource:rows
                      },
                      deleted: false
                  })
                  console.log(this.state.notas.dataSource);
              })
              .catch(err =&gt; {
                  this.setState({loading:false});
                  console.log(err);
              });
      }
  </code></pre>
  <p>This is the part where I want to add the button. Thanks for your answers</p>