if (lastItem.isNull()) {
                    if (i == size() - 1 || get(i + 1).getType() == STRING_ITEM) {
                        remove(i);
                    } else if (get(i + 1).getType() == LIST_ITEM) {
                        Item item = ((ListItem) get(i + 1)).get(0);
                        if (item.getType() == COMBINATION_ITEM || item.getType() == STRING_ITEM) {
                            remove(i);
                        }

    public String toString() {
        return getGroupId() + ":" + getArtifactId() + ":" + getVersion() + ":"
                + (getClassifier() == null ? "" : getClassifier()) + ":"
                + (getType() == null ? DEFAULT_TYPE : getType());
    }

    }

    @Test
    void calculateByte() throws IOException {
        Map<ChecksumAlgorithmService.ChecksumAlgorithm, String> checksums = service.calculate(
                "test".getBytes(StandardCharsets.UTF_8), service.select(Arrays.asList("SHA-1", "MD5")));
        assertNotNull(checksums);
        assertEquals(2, checksums.size());

    }

    /** {@inheritDoc} */
    @Override
    public String getScope() {
        return artifact.getScope();
    }

    /** {@inheritDoc} */
    @Override
    public String getType() {
        return artifact.getType();
    }

    /** {@inheritDoc} */
    @Override
    public String getClassifier() {
        return artifact.getClassifier();
    }

    /** {@inheritDoc} */
    @Override

          <code>
            <![CDATA[
    /**
     * Computes a hash value based on {@link #getType()} and {@link #getProvides()} values.
     */
    public int hashCode() {
        return java.util.Objects.hash(getType(), getProvides());
    } //-- int hashCode()

    /**
     * Checks equality based on {@link #getType()} and {@link #getProvides()} values.
     */
    public boolean equals(Object other) {

                    && Objects.equals(aD.getArtifactId(), bD.getArtifactId()) //
                    && Objects.equals(aD.getVersion(), bD.getVersion()) //
                    && Objects.equals(aD.getType(), bD.getType()) //
                    && Objects.equals(aD.getClassifier(), bD.getClassifier()) //
                    && Objects.equals(aD.getScope(), bD.getScope());

            boolean isArray = param.getType().endsWith("[]");
            boolean isCollection = false;
            boolean isMap = false;
            boolean isProperties = false;
            if (!isArray) {
                try {
                    // assuming Type is available in current ClassLoader
                    isCollection = Collection.class.isAssignableFrom(Class.forName(param.getType()));

            if ((typeReference.getSort() == TypeReference.CLASS_TYPE_PARAMETER || typeReference.getSort() == TypeReference.CLASS_TYPE_PARAMETER_BOUND) &&
                NULLABLE_ANNOTATIONS.contains(Type.getType(descriptor).getClassName())) {
                typeParametersNullability.set(typeReference.getTypeParameterIndex(), true)
            }
            return null
        }
    }

    }

    private record ToolchainWrapperV4(ToolchainPrivate delegate) implements org.apache.maven.api.Toolchain {

        @Override
        public String getType() {
            return delegate.getType();
        }

        @Override
        public String findTool(String toolName) {
            return delegate.findTool(toolName);
        }

        @Override

        this(
                message,
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                artifact.getType(),
                artifact.getClassifier(),
                null,
                artifact.getDownloadUrl(),
                artifact.getDependencyTrail());
    }

    protected ArtifactNotFoundException(