code: func (_m *ChainPuller) HeightsByEndpoints() (map[string]uint64, error) {
  	ret := _m.Called()
  
  	var r0 map[string]uint64
  	if rf, ok := ret.Get(0).(func() map[string]uint64); ok {
  		r0 = rf()
  	} else {
  		if ret.Get(0) != nil {
  			r0 = ret.Get(0).(map[string]uint64)
  		}
  	}
  
  	var r1 error
  	if rf, ok := ret.Get(1).(func() error); ok {
  		r1 = rf()
  	} else {
  		r1 = ret.Error(1)
  	}
  
  	return r0, r1
  }
docs: // HeightsByEndpoints provides a mock function with given fields: