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/GenericJavaTypeProposal.java
fInformationDisplayString= computeContextString(proposal);
			fImage= proposal.getImage();
			fPosition= proposal.getReplacementOffset() + proposal.getReplacementString().indexOf('<') + 1;
		}
		
		/*
		 * @see org.eclipse.jface.text.contentassist.IContextInformation#getContextDisplayString()
		 */
		public String getContextDisplayString() {
			return fContextDisplayString;
		}
		/*
		 * @see org.eclipse.jface.text.contentassist.IContextInformation#getImage()
		 */
		public Image getImage() {
			return fImage;
		}
		/*
		 * @see org.eclipse.jface.text.contentassist.IContextInformation#getInformationDisplayString()
		 */
		public String getInformationDisplayString() {
			return fInformationDisplayString;
		}
		private String computeContextString(GenericJavaTypeProposal proposal) {
			try {
				TypeArgumentProposal[] proposals= proposal.computeTypeArgumentProposals();
				if (proposals.length == 0)
					return null;
				
				StringBuffer buf= new StringBuffer();