Conjugate <code>this</code> by the given quaternion <code>q</code> by computing <code>q * this * q^-1</code>.
@param q the {@link Quaterniond} to conjugate <code>this</code> by @return this
See Implementation
Conjugate <code>this</code> by the given quaternion <code>q</code> by computing <code>q * this * q^-1</code>.
@param q the {@link Quaterniond} to conjugate <code>this</code> by @return this