code: func (_m *DataStore) LedgerHeight() (uint64, error) {
  	ret := _m.Called()
  
  	var r0 uint64
  	if rf, ok := ret.Get(0).(func() uint64); ok {
  		r0 = rf()
  	} else {
  		r0 = ret.Get(0).(uint64)
  	}
  
  	var r1 error
  	if rf, ok := ret.Get(1).(func() error); ok {
  		r1 = rf()
  	} else {
  		r1 = ret.Error(1)
  	}
  
  	return r0, r1
  }
docs: // LedgerHeight provides a mock function with given fields: