causes.forEach(exception::addSuppressed);
                throw exception;
            }
        }
    }

    protected final ProtoLookup protoLookup;

    public LookupInvoker(ProtoLookup protoLookup) {
        this.protoLookup = requireNonNull(protoLookup);
    }

    @Override
    public int invoke(R invokerRequest) throws InvokerException {
        requireNonNull(invokerRequest);

        public ToolchainsBuilder toolchainsBuilder;
        public ModelProcessor modelProcessor;
        public Maven maven;
    }

    public DefaultMavenInvoker(ProtoLookup protoLookup) {
        super(protoLookup);
    }

    @Override
    protected int execute(C context) throws Exception {
        toolchains(context);
        populateRequest(context, context.mavenExecutionRequest);

            throw new InvokerException("Failed to create plexus container capsule", e);
        }
    }

    protected PlexusContainer container(C context) throws Exception {
        ClassWorld classWorld = context.protoLookup.lookup(ClassWorld.class);
        ClassRealm coreRealm = classWorld.getClassRealm("plexus.core");
        List<Path> extClassPath = parseExtClasspath(context);