Class dependencies

SomeService.java

class SomeService {
    private final DependencyA dependencyA;
    private final DependencyB dependencyB;
    private final Optional<DependencyC> dependencyC;

    @Autowired
    public SomeService(DependencyA dependencyA, 
                       DependencyB dependencyB, 
                       Optional<DependencyC> dependencyC) {
        Assert.notNull(dependencyA);
        Assert.notNull(dependencyB);
        Assert.notNull(dependencyC);
        this.dependencyA = dependencyA;
        this.dependencyB = dependencyB;
        this.dependencyC = dependencyC;
    }

    public SomeService(DependencyA dependencyA, DependencyB dependencyB§) {
        this(dependencyA, dependencyB, Optional.empty());
    }
}