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/LazyJavaTypeCompletionProposal.java
return true;
		return
			startsWith(document, offset, getUnqualifiedTypeName()) ||
			startsWith(document, offset, getFullyQualifiedTypeName());
	}
	/*
	 * @see org.eclipse.jdt.internal.ui.text.java.JavaCompletionProposal#getCompletionText()
	 */
	public CharSequence getPrefixCompletionText(IDocument document, int completionOffset) {
		return getUnqualifiedTypeName();
	}
	
	protected char[] computeTriggerCharacters() {
		return TYPE_TRIGGERS;
	}
	
	protected ProposalInfo computeProposalInfo() {
		if (fCompilationUnit != null) {
			IJavaProject project= fCompilationUnit.getJavaProject();
			if (project != null)
				return new TypeProposalInfo(project, fProposal);
		}
		return super.computeProposalInfo();
	}
	protected String computeSortString() {
		
		return getUnqualifiedTypeName() + Character.MIN_VALUE + getFullyQualifiedTypeName();
	}
}