You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: keba-udp_decorators.go
    path of file: ./repos/evcc/charger
    
    the code of the file until where you have to start completion: package charger

// Code generated by github.com/evcc-io/evcc/cmd/tools/decorate.go. DO NOT EDIT.

import (
	"github.com/evcc-io/evcc/api"
)

func decorateKebaUdp(base *KebaUdp, meter func() (float64, error), meterEnergy func() (float64, error), phaseCurrents func() (float64, float64, float64, error)) api.Charger {
	switch {
	case meter == nil && meterEnergy == nil && phaseCurrents == nil:
		return base

	case meter != nil && meterEnergy == nil && phaseCurrents == nil:
		return &struct {
			*KebaUdp
			api.Meter
		}{
			KebaUdp: base,
			Meter: &decorateKebaUdpMeterImpl{
				meter: meter,
			},
		}

	case meter == nil && meterEnergy != nil && phaseCurrents == nil:
		return &struct {
			*KebaUdp
			api.MeterEnergy
		}{
			KebaUdp: base,
			MeterEnergy: &decorateKebaUdpMeterEnergyImpl{
				meterEnergy: meterEnergy,
			},
		}

	case meter != nil && meterEnergy != nil && phaseCurrents == nil:
		return &struct {
			*KebaUdp
			api.Meter
			api.MeterEnergy
		}{
			KebaUdp: base,
			Meter: &decorateKebaUdpMeterImpl{
				meter: meter,
			},
			MeterEnergy: &decorateKebaUdpMeterEnergyImpl{
				meterEnergy: meterEnergy,
			},
		}

	case meter == nil && meterEnergy == nil && phaseCurrents != nil:
		return &struct {
			*KebaUdp
			api.PhaseCurrents
		}{
			KebaUdp: base,
			PhaseCurrents: &decorateKebaUdpPhaseCurrentsImpl{
				phaseCurrents: phaseCurrents,
			},
		}

	case meter != nil && meterEnergy == nil && phaseCurrents != nil:
		return &struct {
			*KebaUdp
			api.Meter
			api.PhaseCurrents
		}{
			KebaUdp: base,
			Meter: &decorateKebaUdpMeterImpl{
				meter: meter,
			},
			PhaseCurrents: &decorateKebaUdpPhaseCurrentsImpl{
				phaseCurrents: phaseCurrents,
			},
		}

	case meter == nil && meterEnergy != nil && phaseCurrents != nil:
		return &struct {
			*KebaUdp
			api.MeterEnergy
			api.PhaseCurrents
		}{
			KebaUdp: base,
			MeterEnergy: &decorateKebaUdpMete
    
func decorateKebaUdp(base *KebaUdp, meter func() (float64, error), meterEnergy func() (float64, error), phaseCurrents func() (float64, float64, float64, error)) api.Charger {
	switch {
	case meter == nil && meterEnergy == nil && phaseCurrents == nil:
		return base

	case meter != nil && meterEnergy == nil && phaseCurrents == nil:
		return &struct {
			*KebaUdp
			api.Meter
		}{
			KebaUdp: base,
			Meter: &decorateKebaUdpMeterImpl{
				meter: meter,
			},
		}

	case meter == nil && meterEnergy != nil && phaseCurrents == nil:
		return &struct {
			*KebaUdp
			api.MeterEnergy
		}{
			KebaUdp: base,
			MeterEnergy: &decorateKebaUdpMeterEnergyImpl{
				meterEnergy: meterEnergy,
			},
		}

	case meter != nil && meterEnergy != nil && phaseCurrents == nil:
		return &struct {
			*KebaUdp
			api.Meter
			api.MeterEnergy
		}{
			KebaUdp: base,
			Meter: &decorateKebaUdpMeterImpl{
				meter: meter,
			},
			MeterEnergy: &decorateKebaUdpMeterEnergyImpl{
				meterEnergy: meterEnergy,
			},
		}

	case meter == nil && meterEnergy == nil && phaseCurrents != nil:
		return &struct {
			*KebaUdp
			api.PhaseCurrents
		}{
			KebaUdp: base,
			PhaseCurrents: &decorateKebaUdpPhaseCurrentsImpl{
				phaseCurrents: phaseCurrents,
			},
		}

	case meter != nil && meterEnergy == nil && phaseCurrents != nil:
		return &struct {
			*KebaUdp
			api.Meter
			api.PhaseCurrents
		}{
			KebaUdp: base,
			Meter: &decorateKebaUdpMeterImpl{
				meter: meter,
			},
			PhaseCurrents: &decorateKebaUdpPhaseCurrentsImpl{
				phaseCurrents: phaseCurrents,
			},
		}

	case meter == nil && meterEnergy != nil && phaseCurrents != nil:
		return &struct {
			*KebaUdp
			api.MeterEnergy
			api.PhaseCurrents
		}{
			KebaUdp: base,
			MeterEnergy: &decorateKebaUdpMeterEnergyImpl{
				meterEnergy: meterEnergy,
			},
			PhaseCurrents: &decorateKebaUdpPhaseCurrentsImpl{
				phaseCurrents: phaseCurrents,
			},
		}

	case meter != nil && meterEnergy != nil && phaseCurrents != nil:
		return &struct {
			*KebaUdp
			api.Meter
			api.MeterEnergy
			api.PhaseCurrents
		}{
			KebaUdp: base,
			Meter: &decorateKebaUdpMeterImpl{
				meter: meter,
			},
			MeterEnergy: &decorateKebaUdpMeterEnergyImpl{
				meterEnergy: meterEnergy,
			},
			PhaseCurrents: &decorateKebaUdpPhaseCurrentsImpl{
				phaseCurrents: phaseCurrents,
			},
		}
	}

	return nil
}