The Client namespace contains the BlockchainHttpClient class that interacts with Blockchain's API using HTTP calls.
A client pointing to https://blockchain.info is created by default in the constructor of all classes in this API client (except for the wallet classes, that connect to a service-my-wallet-v3 running locally). You can create a Blockchain HTTP Client pointing to a different URL, or using an API code to prevent hitting request limits, as follows:
var customClient = new BlockchainHttpClient("api_code", "https://some.other.url");Both parameters are optional, i.e. a client can be created using only one of the two parameters.