text: class NegocicaoesView extends View{
  
      constructor(elemento){
          super(elemento);
      }
  
      template(model){
          return `
          <table class="table table-hover table-bordered">
              <thead>
                  <tr>
                      <th>DATA</th>
                      <th>QUANTIDADE</th>
                      <th>VALOR</th>
                      <th>VOLUME</th>
                  </tr>
              </thead>
              
              <tbody>
  
              ${model.negociacoes.map(n =>`
                  <tr>
                      <td>${DateHelper.dataParaTexto(n.data)}</td>
                      <td>${n.quantidade}</td>
                      <td>${n.valor}</td>
                      <td${n.volume}</td>                   
                  </tr>
                  `
              ).join('')}
              </tbody>
              
              <tfoot>
  
              <td colspan="3"></td>
              <td>
              ${
                 model.negociacoes.reduce(
                 (total,n) => total + n.volume, 0.0)
              }
              </td>
              </tfoot>
          </table>`;
  
      }   
  
  }
  
  
  