showCountOnSearchComputed() {
      // Vue doesn't allow setting default prop value based on another prop value.
      // So use computed property as a workaround.
      // https://github.com/vuejs/vue/issues/6358
      return typeof this.showCountOnSearch === 'boolean'
        ? this.showCountOnSearch
        : this.showCount
    }
Should show children count when searching?
@type {boolean}