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));
    }

    }

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

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