RuleModel m = new RuleModel();
m.name = "test expressionsNestedDate";
FactPattern p = new FactPattern( "Person" );
SingleFieldConstraintEBLeftSide con = new SingleFieldConstraintEBLeftSide();
con.getExpressionLeftSide().appendPart( new ExpressionUnboundFact( p ) );
con.getExpressionLeftSide().appendPart( new ExpressionField( "favouriteCheese",
"Cheese",
SuggestionCompletionEngine.TYPE_OBJECT ) );
con.getExpressionLeftSide().appendPart( new ExpressionField( "dateBrought",
"java.util.Date",