 class="input-group mb-3">
                  <!-- optional indicators -->
                  <span class="input-group-text">
                    <i class="fa fa-spinner fa-spin" v-if="loading"></i>
                    <template v-else>
                      <i class="fa fa-search" v-show="isEmpty"></i>
                      <i class="fa fa-times" v-show="isDirty" @click="reset"></i>
                    </template>
                  </span>
                  <!-- the input field -->
                  <input c