/**
     * Was the given capability already seen which might require a conflict check later?
     * This is needed to determine if also implicit capabilities need to enter conflict detection.
     */
    boolean hasSeenCapability(Capability capability);

    interface Candidate {
        NodeState getNode();
        Capability getCapability();
        Collection<NodeState> getImplicitCapabilityProviders();
    }

                }
                details.getSelected().addCause(conflictResolution);
                return;
            }
        }
    }

    @Override
    public boolean hasSeenCapability(Capability capability) {
        return capabilityWithoutVersionToNodes.containsKey(((CapabilityInternal) capability).getCapabilityId());
    }

    @Override

        // is not a bug but a performance optimization.
        if (capabilities.isEmpty() && (component.hasMoreThanOneSelectedNodeUsingVariantAwareResolution() || capabilitiesConflictHandler.hasSeenCapability(component.getImplicitCapability()))) {
            action.execute(component.getImplicitCapability());
        } else {