Insolvency – Convertible debenture – Appointment of joint receiver – Managers by debenture holder – Duty of receiver – Managers to the debenture holder in the exercise of the power of sale under the convertible debenture – Whether receiver – Managers in breach of duty – Termination by the debenture holder of the receiver – Managers at the point of their exercising their power of sale – Whether any basis exist upon which receiver – Managers may refuse to accept termination – Duty of debenture holder – Whether debenture holder in breach of duty – Whether a court of equity can invalidate the termination of the receiver – Managers by the debenture holder