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<div class="block"><p class="changed_modified_2_2">
 Generate an identifier for a component. The identifier will be prefixed with UNIQUE_ID_PREFIX, and will be unique
 within this component-container. Optionally, a unique seed value can be supplied by component creators which should
 be included in the generated unique id.
 </p>
 <p class="changed_added_2_2">
 If the <code>prependId</code> property has the value <code>false</code>, this method must call
 <code>createUniqueId</code> on the next ancestor <c