Add utility method

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

@@ -30,6 +30,14 @@ public class NullableInt52 implements Serializable, IGenericNullable {
 		}
 	}
 
+	public static NullableInt52 ofNullableNumber(@Nullable Number value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new NullableInt52(Int52.fromLong(value.longValue()));
+		}
+	}
+
 	public static NullableInt52 empty() {
 		return NULL;
 	}

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

@@ -30,6 +30,14 @@ public class Nullablebyte implements Serializable, IGenericNullable {
 		}
 	}
 
+	public static Nullablebyte ofNullableNumber(@Nullable Number value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullablebyte(value.byteValue());
+		}
+	}
+
 	public static Nullablebyte empty() {
 		return NULL;
 	}

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

@@ -30,6 +30,14 @@ public class Nullabledouble implements Serializable, IGenericNullable {
 		}
 	}
 
+	public static Nullabledouble ofNullableNumber(@Nullable Number value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullabledouble(value.doubleValue());
+		}
+	}
+
 	public static Nullabledouble empty() {
 		return NULL;
 	}

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

@@ -30,6 +30,14 @@ public class Nullablefloat implements Serializable, IGenericNullable {
 		}
 	}
 
+	public static Nullablefloat ofNullableNumber(@Nullable Number value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullablefloat(value.floatValue());
+		}
+	}
+
 	public static Nullablefloat empty() {
 		return NULL;
 	}

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

@@ -30,6 +30,14 @@ public class Nullableint implements Serializable, IGenericNullable {
 		}
 	}
 
+	public static Nullableint ofNullableNumber(@Nullable Number value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullableint(value.intValue());
+		}
+	}
+
 	public static Nullableint empty() {
 		return NULL;
 	}

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

@@ -30,6 +30,14 @@ public class Nullablelong implements Serializable, IGenericNullable {
 		}
 	}
 
+	public static Nullablelong ofNullableNumber(@Nullable Number value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullablelong(value.longValue());
+		}
+	}
+
 	public static Nullablelong empty() {
 		return NULL;
 	}

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

@@ -30,6 +30,14 @@ public class Nullableshort implements Serializable, IGenericNullable {
 		}
 	}
 
+	public static Nullableshort ofNullableNumber(@Nullable Number value) {
+		if (value == null) {
+			return NULL;
+		} else {
+			return new Nullableshort(value.shortValue());
+		}
+	}
+
 	public static Nullableshort empty() {
 		return NULL;
 	}