public float mass(String boneName) {
        float mass;
        if (torsoName.equals(boneName)) {
            mass = torsoMass;
        } else {
            mass = blConfigMap.get(boneName);
        }
        return mass;
    }
Read the mass of the named bone/torso.

@param boneName the name of the bone/torso (not null)
@return the mass (in physics units, &gt;0)
jme3-jbullet/src/main/java/com/jme3/bullet/animation/DacConfiguration.java