@Override
    public final @NonNull Map<CloudKey<?>, ? extends @NonNull Object> all() {
        return Collections.unmodifiableMap(this.internalStorage);
    }
Attempts to retrieve a value that has been registered to the associated command manager's
{@link ParameterInjectorRegistry}.

@param <T>  type to inject
@param type type to inject
@return optional that may contain the created value
cloud-core/src/main/java/org/incendo/cloud/context/CommandContext.java