ditto in test

Tests/Unit/Sample/CoreAndShellTest.cpp

@@ -25,7 +25,7 @@ TEST_F(CoreAndShellTest, ComplexCoreShellClone)
     Particle shell(shell_material, Box(shell_length, shell_width, shell_height));
     R3 relative_pos(0, 0, (shell_height - core_height) / 2);
     CoreAndShell coreshell(shell, core, relative_pos);
-    coreshell.setRotation(RotationY(90 * Units::deg));
+    coreshell.rotate(RotationY(90 * Units::deg));
     coreshell.setParticlePosition(R3(0, 0, -10));
 
     CoreAndShell* clone = coreshell.clone();