Bug 43488 [typing] BadPositionCategoryException in LinkedPositionManager
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/link/contentassist/ContentAssistant2.java
/**
	 * Callback to signal this content assistant that the presentation of the context information has been stopped.
	 * @since 2.1 
	 */
	protected void contextInformationClosed() {
	}
	
	/**
	 * Requests that the specified context information to be shown.
	 *
	 * @param contextInformation the context information to be shown
	 * @param position the position to which the context information refers to
	 * @since 2.0
	 */
	void showContextInformation(IContextInformation contextInformation, int position) {
		fContextInfoPopup.showContextInformation(contextInformation, position);
	}
	
	/**
	 * Returns the current content assist error message.
	 *
	 * @return an error message or <code>null</code> if no error has occurred
	 */
	String getErrorMessage() {
		return fLastErrorMessage;
	}
	
	/**
	 * Returns the content assist processor for the content