code: public Observable<ManagementLockObjectInner> getAtSubscriptionLevelAsync(String lockName) {
          return getAtSubscriptionLevelWithServiceResponseAsync(lockName).map(new Func1<ServiceResponse<ManagementLockObjectInner>, ManagementLockObjectInner>() {
              @Override
              public ManagementLockObjectInner call(ServiceResponse<ManagementLockObjectInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets a management lock at the subscription level.
  
  @param lockName The name of the lock to get.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the ManagementLockObjectInner object