code: public Observable<DenyAssignmentInner> getByIdAsync(String denyAssignmentId) {
          return getByIdWithServiceResponseAsync(denyAssignmentId).map(new Func1<ServiceResponse<DenyAssignmentInner>, DenyAssignmentInner>() {
              @Override
              public DenyAssignmentInner call(ServiceResponse<DenyAssignmentInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets a deny assignment by ID.
  
  @param denyAssignmentId The fully qualified deny assignment ID. For example, use the format, /subscriptions/{guid}/providers/Microsoft.Authorization/denyAssignments/{denyAssignmentId} for subscription level deny assignments, or /providers/Microsoft.Authorization/denyAssignments/{denyAssignmentId} for tenant level deny assignments.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the DenyAssignmentInner object