code: func (_m *Factory) GetOrCreate(chainID string) (blockledger.ReadWriter, error) {
  	ret := _m.Called(chainID)
  
  	var r0 blockledger.ReadWriter
  	if rf, ok := ret.Get(0).(func(string) blockledger.ReadWriter); ok {
  		r0 = rf(chainID)
  	} else {
  		if ret.Get(0) != nil {
  			r0 = ret.Get(0).(blockledger.ReadWriter)
  		}
  	}
  
  	var r1 error
  	if rf, ok := ret.Get(1).(func(string) error); ok {
  		r1 = rf(chainID)
  	} else {
  		r1 = ret.Error(1)
  	}
  
  	return r0, r1
  }
docs: // GetOrCreate provides a mock function with given fields: chainID