Add isOne to NumberAssert
add since javadoc tag
@@ -81,6 +81,7 @@ public interface NumberAssert<S extends NumberAssert<S, A>, A extends Number> {
* @return this assertion object.
* @throws AssertionError if the actual value is {@code null}.
* @throws AssertionError if the actual value is not equal to one.
+ * @since 2.7.0 / 3.7.0
*/
S isOne();
