zkApp Developerso1js ReferenceFunctionsfetchLastBlockfetchLastBlockfetchLastBlock(graphqlEndpoint: string): Promise<PreconditionBaseTypes<{}>>Fetches the last block on the Mina network.Parameters• graphqlEndpoint: string= networkConfig.minaEndpointReturnsPromise\<PreconditionBaseTypes\<{}>>Sourcelib/mina/fetch.ts:450