Bug 92563 [content assist] Warm code assist performance for many types
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/GenericJavaTypeProposal.java
private static final class TypeArgumentProposal {
		private boolean fIsAmbiguous;
		private String fProposal;
		TypeArgumentProposal(String proposal, boolean ambiguous) {
			fIsAmbiguous= ambiguous;
			fProposal= proposal;
		}
		boolean isAmbiguous() {
			return fIsAmbiguous;
		}
		String getProposals() {
			return fProposal;
		}
		public String toString() {
			return fProposal;
		}
	}
	private static final class FormatterPrefs {