extending to be more convenient

src/commonTest/kotlin/KDFTest.kt

@@ -38,4 +38,11 @@ class KDFTest {
         assertEquals(set2, set1)
     }
 
+    @Test
+    fun complexityTest() = runTest{
+        initCrypto()
+        val kk = KDF.Complexity.Interactive.kdfForSize(3).deriveMultiple("lala", 3)
+        assertEquals(3, kk.size)
+    }
+
 }