private void dropTest() {
        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(0f, 2f, -5f), 2);
        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(-1f, 2f, -5f), 2);
        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(-2f, 2f, -5f), 2);
        attachTestObject(new Cylinder(2, 16, 0.2f, 2f, true), new Vector3f(-3f, 2f, -5f), 2);
    }
Test demonstrating a GImpactCollisionShape falling through a curved mesh, when using JBullet. Bullet native
does not experience this issue at the time this test was created.

@author lou
jme3-examples/src/main/java/jme3test/bullet/TestIssue1120.java