Is product liquid?

Sources/OpenFoodFacts/Schemas/Product.swift

@@ -205,14 +205,8 @@ public class Product: Codable, ObjectDebugger {
 	public var waterQuantity: Units.UnitValue<Double>? {
 		guard let ingredient = ingredients?.first(where: { $0.isWater })
 		else {
-			print("The ingredient was not found.")
 			return nil
 		}
-		print(ingredient)
-
-		print("Product quantity", productQuantity)
-		print("Percent estimate", ingredient.percentEstimate)
-		print("Raw unit", productQuantityUnit)
 
 		guard let quantity = productQuantity,
 			let estimate = ingredient.percentEstimate,
@@ -225,6 +219,16 @@ public class Product: Codable, ObjectDebugger {
 		return Double(quantity * (estimate / 100))[unit]
 	}
 
+	public var isLiquid: Bool {
+		guard let rawUnit = productQuantityUnit,
+			let unit = Units.Unit(rawValue: rawUnit)
+		else {
+			return false
+		}
+
+		return unit.category == .volume
+	}
+
 	private enum CodingKeys: String, CodingKey {
 		// case images
 		case ingredients