Add Format Predicate Overload

Author: rcosta358

liquidjava-verifier/src/main/java/liquidjava/rj_language/ast/formatter/ExpressionFormatter.java

@@ -3,6 +3,7 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
+import liquidjava.rj_language.Predicate;
 import liquidjava.rj_language.ast.AliasInvocation;
 import liquidjava.rj_language.ast.BinaryExpression;
 import liquidjava.rj_language.ast.Expression;
@@ -26,6 +27,10 @@
  */
 public class ExpressionFormatter implements ExpressionVisitor<String> {
 
+    public static String format(Predicate predicate) {
+        return format(predicate.getExpression());
+    }
+
     public static String format(Expression expression) {
         return new ExpressionFormatter().formatExpression(expression);
     }