@Override protected List<Statement> generateDestroyInstanceStatements(final ClassStructureBuilder<?> bodyBlockBuilder, final Injectable injectable, final DependencyGraph graph, final InjectionContext injectionContext) { final List<Statement> destroyInstanceStmts = new ArrayList<>(); final Multimap<DependencyType, Dependency> depsByType = separateByType(injectable.getDependencies()); final Collection<Dependency> producerMemberDeps = depsByType.get(DependencyType.ProducerMember); if (producerMemberDeps.size() != 1) { throw new RuntimeException("A produced type must have exactly 1 producing instance but " + producerMemberDeps.size() + " were found."); } final Collection<Dependency> disposerMethodDeps = depsByType.get(DependencyType.DisposerMethod); if (disposerMethodDeps.size() > 1) { // TODO error message with matching disposer names. throw new RuntimeException(); } else if (disposerMethodDeps.size() == 1) { final DisposerMethodDependency disposerDep = (DisposerMethodDependency) disposerMethodDeps.iterator().next(); final MetaMethod disposer = disposerDep.getDisposerMethod(); controller.ensureMemberExposed(disposer); final Statement invocation = controller.exposedMethodStmt( controller.getReferenceStmt(PRODUCER_INSTANCE, disposer.getDeclaringClass()), disposer, getDisposerParams(disposer, depsByType.get(DependencyType.DisposerParameter), bodyBlockBuilder.getClassDefinition())); destroyInstanceStmts.add(invocation); } return destroyInstanceStmts; }