code: public VaultInner createOrUpdate(String resourceGroupName, String vaultName, VaultCreateOrUpdateParameters parameters) {
          return createOrUpdateWithServiceResponseAsync(resourceGroupName, vaultName, parameters).toBlocking().single().body();
      }
docs: Create or update a key vault in the specified subscription.
  
  @param resourceGroupName The name of the Resource Group to which the server belongs.
  @param vaultName Name of the vault
  @param parameters Parameters to create or update the vault
  @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
  @return the VaultInner object if successful.