DefaultServiceSpec<?> spec = uncheckedNonnullCast(specInstantiator.newInstance(DefaultServiceSpec.class, parameters));
            spec.getMaxParallelUsages().set(maxUsages);
            return spec;
        };
        return doRegisterIfAbsent(name, uncheckedNonnullCast(implementationType), uncheckedNonnullCast(buildServiceSpecSupplier));
    }

        Object results = connection.run(action, buildCancellationToken, providerParameters);
        return new ProviderBuildResult<>(Cast.uncheckedNonnullCast(results));
    }

    /**
     * This is used by consumers 4.4 and later
     */
    @Override

                }
                if (next == END) {
                    return;
                }
                try {
                    handle(Cast.uncheckedNonnullCast(next));
                } catch (Exception e) {
                    failure.set(e);
                    break;
                }
            }