code: public void acquire(String resourceGroupName, String serverName, String dnsAliasName) {
          acquireWithServiceResponseAsync(resourceGroupName, serverName, dnsAliasName).toBlocking().last().body();
      }
docs: Acquires server DNS alias from another server.
  
  @param resourceGroupName The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
  @param serverName The name of the server that the alias is pointing to.
  @param dnsAliasName The name of the server dns alias.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent