title: Material-table: Is it possible to open detailsPanel by default?
body: <p>I'm trying to create a subtable of the main React <a href="https://material-table.com/" rel="nofollow noreferrer">Material-Table</a>.
  Everything is working properly as it should work, details panel (subtable) is showing on toggle icon press.</p>
  <p>Are there any ways to show it opened by default? I mean to remove the toggle icon and show the <code>detailPanel</code> right from the component render?</p>
  <p>Here is how my mat-table looks like (I didn't want to insert the whole component code, cause it will be too much code, full code is in the sandbox):</p>
  <pre><code>&lt;MaterialTable
          icons={tableIcons}
          tableRef={tableRef}
          columns={tableColumns}
          data={tableData}
          onRowClick={(evt, selectedRow) =&gt;
            setSelectedRow(selectedRow.tableData.id)
          }
          title=&quot;Remote Data Example&quot;
          detailPanel={detailSubtable}
          options={{
            rowStyle: rowData =&gt; ({
              backgroundColor:
                selectedRow === rowData.tableData.id ? &quot;#EEE&quot; : &quot;#FFF&quot;
            })
          }}
        /&gt;
  </code></pre>
  <p>And a link to the <strong><a href="https://codesandbox.io/s/material-table-change-width-of-column-4sbvf?fontsize=14&amp;hidenavigation=1&amp;theme=dark" rel="nofollow noreferrer">Codesandbox</a></strong></p>