public String getEntityValue(String ename) {
        EntityInfo entity = entityInfo.get(ename);
        return (entity == null) ? null : entity.value;
    }
Return an internal entity's replacement text.

@param ename
           The name of the internal entity.
@return The entity's replacement text, or null if the entity was not
        declared as an internal entity.
@see #getEntityType
src/nu/validator/gnu/xml/aelfred2/XmlParser.java