return (getGroupId() == null ? "[unknown-group-id]" : getGroupId())
            + ":" + (getArtifactId() == null ? "[unknown-artifact-id]" : getArtifactId())
            + ":" + (getVersion() == null ? "[unknown-version]" : getVersion());
    }
            ]]>
          </code>
        </codeSegment>
      </codeSegments>
    </class>
  </classes>

        return Objects.equals(d1.getGroupId(), d2.getGroupId())
                && Objects.equals(d1.getArtifactId(), d2.getArtifactId())
                && Objects.equals(d1.getVersion(), d2.getVersion())
                && Objects.equals(d1.getType(), d2.getType())
                && Objects.equals(d1.getClassifier(), d2.getClassifier())
                && Objects.equals(d1.getScope(), d2.getScope())

        });

        TaskProvider<UserGuideTransformTask> dslStandaloneDocbook = tasks.register("dslStandaloneDocbook", UserGuideTransformTask.class, task -> {
            task.getVersion().convention(project.provider(() -> project.getVersion().toString()));
            task.getSourceFile().convention(dslDocbook.flatMap(AssembleDslDocTask::getDestFile));

        result = 31 * result + a.getGroupId().hashCode();
        result = 31 * result + a.getArtifactId().hashCode();
        result = 31 * result + a.getType().hashCode();
        if (a.getVersion() != null) {
            result = 31 * result + a.getVersion().hashCode();
        }
        result = 31 * result + (a.getClassifier() != null ? a.getClassifier().hashCode() : 0);

        if (!pomArtifact.getClassifier().isEmpty() || !"pom".equals(pomArtifact.getExtension())) {
            pomArtifact =
                    new DefaultArtifact(artifact.getGroupId(), artifact.getArtifactId(), "pom", artifact.getVersion());
        }

        return pomArtifact;
    }

    /**
     * Creates POM artifact out of passed in artifact by dropping classifier (if exists) and rewriting extension to

            Artifact artifact = (Artifact) iter.next();
            System.out.println("Artifact: " + artifact.getDependencyConflictId() + " " + artifact.getVersion()
                    + " Optional=" + (artifact.isOptional() ? "true" : "false"));
            assertTrue(
                    artifact.getVersion().equals("1.0"), "Incorrect version for " + artifact.getDependencyConflictId());
        }
    }

                .getOrDefault(artifact.getArtifactId(), Collections.emptyMap())
                .values()
                .stream()
                .map(MavenProject::getVersion)
                .collect(Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList));
        if (!versions.isEmpty()) {
            return versions;
        }
        return getAllProjects()

        } catch (InvalidVersionSpecificationException e) {
            result.addException(e);
            throw new VersionRangeResolutionException(result);
        }

        result.setVersionConstraint(versionConstraint);

        if (versionConstraint.getRange() == null) {
            result.addVersion(versionConstraint.getVersion());
        } else {

        }

        // beware meta-versions!
        String version = metadata.getVersion();
        if (Artifact.LATEST_VERSION.equals(version) || Artifact.RELEASE_VERSION.equals(version)) {
            // meta-versions are not valid <version/> values...don't write them.
            metadata.setVersion(null);
        }

        if (changed || !metadataFile.exists()) {

            Artifact artifact = (Artifact) aSet;
            System.out.println("Artifact: " + artifact.getDependencyConflictId() + " " + artifact.getVersion()
                    + " Optional=" + (artifact.isOptional() ? "true" : "false"));
            assertTrue(
                    artifact.getVersion().equals("1.0"), "Incorrect version for " + artifact.getDependencyConflictId());
        }
    }