scope.seed(Object.class, o2);
        assertSame(o2, scope.scope(Key.get(Object.class), null).get());

        scope.exit();
        assertSame(o1, scope.scope(Key.get(Object.class), null).get());

        scope.exit();

        assertThrows(IllegalStateException.class, () -> scope.exit());
    }

    @Test
    void testMultiKeyInstance() throws Exception {
        MojoExecutionScope scope = new MojoExecutionScope();

            assertTrue(deployedFile.exists());
            assertEquals("dummy", new String(Files.readAllBytes(deployedFile.toPath()), StandardCharsets.UTF_8).trim());
        } finally {
            sessionScope.exit();
        }
    }

        LinkedList<ScopeState> stack = values.get();
        if (stack == null || stack.isEmpty()) {
            throw new IllegalStateException();
        }
        return stack.getFirst();
    }

    public void exit() throws MojoExecutionException {
        final LinkedList<ScopeState> stack = values.get();
        if (stack == null || stack.isEmpty()) {
            throw new IllegalStateException();
        }
        stack.removeFirst();

                    // ignore
                }
                metadataFile.delete(); // if this fails, forget about it, we'll try to overwrite it anyway so no need
                // to delete on exit
            }
        } else if (metadataFile.exists()) {
            try (InputStream input = Files.newInputStream(metadataFile.toPath())) {
                metadata = new Metadata(new MetadataStaxReader().read(input, false));

                    new MojoExecutionEvent(session, project, mojoExecution, mojo, e));
            throw e;
        } finally {
            mavenPluginManager.releaseMojo(mojo, mojoExecution);
            scope.exit();
            Thread.currentThread().setContextClassLoader(oldClassLoader);
            legacySupport.setSession(oldSession);
        }
    }

    /**

                for (MetadataGraphEdge e : outs) {
                    sb.append("        to :  ").append(e.toString()).append('\n');
                }
            } else {
                sb.append("      no exit\n");
            }

            sb.append("-------------------------------------------------\n");
        }
        sb.append("=============================================================\n");

            legacySupport.setSession(session);

            return doExecute(request, session, result, chainedWorkspaceReader);
        } finally {
            sessionScope.exit();
        }
    }

    private MavenExecutionResult doExecute(
            MavenExecutionRequest request,
            MavenSession session,
            MavenExecutionResult result,

        if (values.isEmpty()) {
            throw new OutOfScopeException("Cannot access session scope outside of a scoping block");
        }
        return values.get(0);
    }

    public void exit() {
        if (values.isEmpty()) {
            throw new IllegalStateException();
        }
        values.remove(0);
    }

    public <T> void seed(Class<T> clazz, Provider<T> value) {

        URL myResource = ExpressionDocumenter.class.getClassLoader().getResource(myResourcePath);

        assert myResource != null : "The resource is this class itself loaded by its own classloader and must exist";

        String myClasspathEntry = myResource.getPath();

        myClasspathEntry = myClasspathEntry.substring(0, myClasspathEntry.length() - (myResourcePath.length() + 2));

                if (pomFile.canRead()) {
                    return length != pomFile.length() || timestamp != pomFile.lastModified();
                } else {
                    // if the POM didn't exist, retry if any repo is configured to always update
                    boolean snapshot = pomArtifact.isSnapshot();
                    for (ArtifactRepository repository : remoteRepositories) {