Bug 108700 [typing] Automatically close parenthesis does not work when content assist popup is up
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/LazyJavaCompletionProposal.java
/*
	 * @see ICompletionProposal#getDisplayString()
	 */
	public final String getDisplayString() {
		if (!fDisplayStringComputed) {
			fDisplayStringComputed= true;
			fDisplayString= computeDisplayString();
		}
		return fDisplayString;
	}
	protected String computeDisplayString() {
		return new CompletionProposalLabelProvider().createLabel(fProposal);
	}
	/*
	 * @see ICompletionProposal#getAdditionalProposalInfo()
	 */
	public final String getAdditionalProposalInfo() {
		if (getProposalInfo() != null) {
			return getProposalInfo().getInfo();
		}
		return null;
	}
	/*
	 * @see ICompletionProposalExtension#getContextInformationPosition()
	 */
	public final int getContextInformationPosition() {
		if (getContextInformation() == null)
			return getReplacementOffset() - 1;
		return getReplacementOffset() + getCursorPosition();
	}