Section 2509. Control of assets by agreement with surety

Any person of whom
  an  undertaking is required may agree with his surety for the deposit of
  any assets for which his surety may be held responsible with a bank,  or
  safe  deposit  or trust company, authorized to do business in the state,
  if such deposit is otherwise proper and in such  manner  as  to  prevent
  withdrawal  without  the  written  consent  of the surety or an order of
  court, made on notice to the surety. The agreement shall not affect  the
  liability  of the principal or surety as established by the terms of the
  undertaking.