}

    @Override
    public boolean isSelectedVersionKnown() throws OverConstrainedVersionException {
        return versionRange.isSelectedVersionKnown(this);
    }

    @Override
    public void setOptional(boolean optional) {
        this.optional = optional;
    }

            return null;
        }

        org.apache.maven.artifact.Artifact result = toArtifact(dependency.getArtifact());
        result.setScope(dependency.getScope());
        result.setOptional(dependency.isOptional());

        return result;
    }

    public static org.apache.maven.artifact.Artifact toArtifact(Artifact artifact) {
        if (artifact == null) {
            return null;
        }

    public boolean isOptional() {
        return (getOptional() != null) ? Boolean.parseBoolean(getOptional()) : false;
    }

            ]]>
          </code>
        </codeSegment>
        <codeSegment>
          <version>4.0.0/4.0.99</version>
          <code>
            <![CDATA[
    public void setOptional(boolean optional) {
        setOptional(String.valueOf(optional));
    }

                        dependency = dependency.withScope(managedDependency.getScope());
                    }
                    if (dependency.getOptional() == null && managedDependency.getOptional() != null) {
                        dependency = dependency.withOptional(managedDependency.getOptional());
                    }
                    if (dependency.getExclusions().isEmpty()

            if (request.getValidationLevel() >= ModelBuildingRequest.VALIDATION_LEVEL_MAVEN_2_0) {
                validateBoolean(
                        prefix, "optional", problems, errOn30, Version.V20, d.getOptional(), d.getManagementKey(), d);

                if (!management) {
                    validateVersion(
                            prefix, "version", problems, errOn30, Version.V20, d.getVersion(), d.getManagementKey(), d);