@Override
    public boolean equals(Object o) {
        if (o == this) {
            return true;
        }

        if (o instanceof Artifact a) {
            if (!a.getGroupId().equals(getGroupId())) {
                return false;
            } else if (!a.getArtifactId().equals(getArtifactId())) {
                return false;
            } else if (!a.getVersion().equals(getVersion())) {

        RepositoryMetadata metadata;
        // Don't use snapshot metadata for LATEST (which isSnapshot returns true for)
        if (!artifact.isSnapshot() || Artifact.LATEST_VERSION.equals(artifact.getBaseVersion())) {
            metadata = new ArtifactRepositoryMetadata(artifact);
        } else {
            metadata = new SnapshotArtifactRepositoryMetadata(artifact);
        }

            if (other.value1 != null) {
                return false;
            }
        } else if (!value1.equals(other.value1)) {
            return false;
        }
        if (value2 == null) {
            if (other.value2 != null) {
                return false;
            }
        } else if (!value2.equals(other.value2)) {
            return false;
        }
        if (value3 == null) {

    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (obj == null) {
            return false;
        }

        if (!UrlSource.class.equals(obj.getClass())) {
            return false;
        }

        UrlSource other = (UrlSource) obj;
        return Objects.equals(url.toExternalForm(), other.url.toExternalForm());
    }

redirectPage.append(((jakarta.servlet.http.HttpServletRequest)request).getContextPath());
if("systemError".equals(type)) {
	if(requestUri != null && !requestUri.endsWith("systemError")) {
		redirectPage.append("/error/systemerror/");
		response.sendRedirect(redirectPage.toString());
	} else {
		response.sendError(statusCode);
	}
} else if("logOut".equals(type)) {
	redirectPage.append("/login/?type=logout&code=" + statusCode);

redirectPage.append(((jakarta.servlet.http.HttpServletRequest)request).getContextPath());
if("systemError".equals(type)) {
	if(requestUri != null && !requestUri.endsWith("systemError")) {
		redirectPage.append("/error/systemerror/");
		response.sendRedirect(redirectPage.toString());
	} else {
		response.sendError(statusCode);
	}
} else if("logOut".equals(type)) {
	redirectPage.append("/login/?type=logout&code=" + statusCode);

                boolean exists = installed.stream()
                        .map(this::getArtifactFromMap)
                        .anyMatch(a -> a.getName().equals(target.getName()) && a.getVersion().equals(target.getVersion()));
                if (!exists) {
                    ThreadUtil.sleep(500);
                    continue;
                }

    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        DefaultArtifact that = (DefaultArtifact) o;
        return Objects.equals(groupId, that.groupId)
                && Objects.equals(artifactId, that.artifactId)

    }

    static final class Pred<N> extends NodeConnection<N> {
      Pred(N node) {
        super(node);
      }

      @Override
      public boolean equals(@Nullable Object that) {
        if (that instanceof Pred) {
          return this.node.equals(((Pred<?>) that).node);
        } else {
          return false;
        }
      }

      @Override
      public int hashCode() {

          }
        }
      }
      return this;
    }

    /**
     * Tests {@link Object#equals} and {@link Object#hashCode} against the return values of the
     * static methods, by asserting that when equal parameters are passed to the same static method,
     * the return value should also be equal; and vice versa.
     *
     * <p>Test fails if default value cannot be determined for a constructor or factory method