javadoc and whitespace

MinieExamples/src/main/java/com/github/stephengold/shapes/custom/CustomBox.java

@@ -152,6 +152,7 @@ public Vector3f getHalfExtents(Vector3f storeResult) {
         } else {
             result = storeResult.set(unscaledHe);
         }
+
         return result;
     }
     // *************************************************************************

MinieExamples/src/main/java/com/github/stephengold/shapes/custom/CustomCylinder.java

@@ -39,8 +39,8 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 import jme3utilities.math.MyVolume;
 
 /**
- * A collision shape for a solid right circular cylinder with uniform density.
- * By convention, the local Y axis is the height axis.
+ * A collision shape for a right circular cylinder with uniform density. By
+ * convention, the local Y axis is the height axis.
  * <p>
  * {@code CylinderCollisionShape} is more flexible and probably more efficient.
  * <p>

MinieLibrary/src/main/java/com/jme3/bullet/collision/shapes/MinkowskiSum.java

@@ -155,7 +155,7 @@ public void cloneFields(Cloner cloner, Object original) {
     }
 
     /**
-     * Return the collision margin of the shape.
+     * Return the collision margin of this shape.
      *
      * @return the margin thickness (in physics-space units, ≥0)
      */