How to use the @here/olp-sdk-dataservice-api.MetadataApi.getPartitions function in @here/olp-sdk-dataservice-api

async getPartitions(
        partitionsRequest: PartitionsRequest
    ): Promise {
        const metaRequestBilder = await this.getRequestBuilder("metadata");
        const version =
            partitionsRequest.getVersion() || (await this.getLatestVersion());
        return MetadataApi.getPartitions(metaRequestBilder, {
            version,
            layerId: this.layerId
        });
    }

async getPartitions(
        partitionsRequest: PartitionsRequest
    ): Promise {
        const metaRequestBilder = await this.getRequestBuilder("metadata");
        return MetadataApi.getPartitions(metaRequestBilder, {
            layerId: this.layerId
        });
    }