How to use the @microsoft/api-extractor-model.ApiStaticMixin.isBaseClassOf function in @microsoft/api-extractor-model

private _createModifiersCell(apiItem: ApiItem): DocTableCell {
    const configuration: TSDocConfiguration = this._tsdocConfiguration;

    const section: DocSection = new DocSection({ configuration });

    if (ApiStaticMixin.isBaseClassOf(apiItem)) {
      if (apiItem.isStatic) {
        section.appendNodeInParagraph(new DocCodeSpan({ configuration, code: 'static' }));
      }
    }

    return new DocTableCell({ configuration }, section.nodes);
  }

private _createModifiersCell(apiItem: ApiItem): DocTableCell {
    const configuration: TSDocConfiguration = this._tsdocConfiguration;

    const section: DocSection = new DocSection({ configuration });

    if (ApiStaticMixin.isBaseClassOf(apiItem)) {
      if (apiItem.isStatic) {
        section.appendNodeInParagraph(new DocCodeSpan({ configuration, code: 'static' }));
      }
    }

    return new DocTableCell({ configuration }, section.nodes);
  }