createdPropertySet = new HashSet<XMethod>();
createdMethodParameterPropertySet = new HashSet<XMethod>();
	public BuildNonNullAnnotationDatabase() {		// Ensure we are using the same databases as the AnalysisContext.		AnalysisContext analysisContext = AnalysisContext.currentAnalysisContext();		analysisContext.setNonNullParamDatabase(				nonNullDatabase = createIfNeeded(analysisContext.getNonNullParamDatabase()));		analysisContext.setPossiblyNullParamDatabase(				possiblyNullDatabase = createIfNeeded(analysisContext.getPossiblyNullParamDatabase()));		// Keep track of which properties we created.		// When we encounter @NonNull and @PossiblyNull annotations, we		// will override any existing properties in the database.		createdPropertySet = new HashSet<XMethod>();	}