abrirPdf() {
      const blob = new Blob([this.matriculaPdf], { type: 'application/pdf' });
      // IE doesn't allow using a blob object directly as link href
      // instead it is necessary to use msSaveOrOpenBlob
      if (window.navigator && window.navigator.msSaveOrOpenBlob) {
        window.navigator.msSaveOrOpenBlob(blob);
        return;
      }
      // For other browsers:
      // Create a link pointing to the ObjectURL containing the blob.
      const data = window.URL.createObjectURL(blob);
      // window.open(data, '_blank');
      const link = document.createElement('a');
      link.href = data;
      link.target = '_blank';
      link.click();
      setTimeout(() => {
        // For Firefox it is necessary to delay revoking the ObjectURL
        window.URL.revokeObjectURL(data);
      }, 100);
    },