code: public void claimAny(String resourceGroupName, String labAccountName, String labName, String environmentSettingName) {
          claimAnyWithServiceResponseAsync(resourceGroupName, labAccountName, labName, environmentSettingName).toBlocking().single().body();
      }
docs: Claims a random environment for a user in an environment settings.
  
  @param resourceGroupName The name of the resource group.
  @param labAccountName The name of the lab Account.
  @param labName The name of the lab.
  @param environmentSettingName The name of the environment Setting.
  @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