Function getBlockchainApiUrls

getBlockchainApiUrls(
directoryClient: Queryable,
blockchainRid: Buffer,
): Promise<string[]>
Retrieves the api urls that is available on for this blockchain
Parameters
- directoryClient: Queryable
  client configured to the directory chain of the cluster
- blockchainRid: Buffer
  the blockchain rid of which to get urls for
Returns Promise<string[]>