Optimize hashcode

src/main/java/it/cavallium/data/generator/nativedata/NullableInt52.java

@@ -98,7 +98,7 @@ public class NullableInt52 implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/NullableString.java

@@ -114,7 +114,7 @@ public class NullableString implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullableboolean.java

@@ -96,7 +96,7 @@ public class Nullableboolean implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullablebyte.java

@@ -96,7 +96,7 @@ public class Nullablebyte implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullablechar.java

@@ -96,7 +96,7 @@ public class Nullablechar implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullabledouble.java

@@ -96,7 +96,7 @@ public class Nullabledouble implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullablefloat.java

@@ -96,7 +96,7 @@ public class Nullablefloat implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullableint.java

@@ -96,7 +96,7 @@ public class Nullableint implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullablelong.java

@@ -96,7 +96,7 @@ public class Nullablelong implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override

src/main/java/it/cavallium/data/generator/nativedata/Nullableshort.java

@@ -96,7 +96,7 @@ public class Nullableshort implements Serializable, IGenericNullable {
 
 	@Override
 	public int hashCode() {
-		return Objects.hash(value);
+		return value == null ? 0 : value.hashCode();
 	}
 
 	@Override