__renderPreviousButton(type, previousMonth, previousYear) {
    const { disabled, month } = this.__getPreviousDisabled(type, previousMonth, previousYear);
    const previousButtonTitle = this.__getNavigationLabel('previous', type, month, previousYear);
    const clickDateDelegation = () => {
      if (type === 'FullYear') {
        this.goToPreviousYear();
      } else {
        this.goToPreviousMonth();
      }
    };

    return html`
      <button
        class="calendar__previous-button"
        aria-label=${previousButtonTitle}
        title=${previousButtonTitle}
        @click=${clickDateDelegation}
        ?disabled=${disabled}
      >
        ${this._previousIconTemplate()}
      </button>
    `;
  }
@param {string} type
@param {string} previousMonth
@param {number} previousYear
@protected