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: collection.go
    path of file: ./repos/ebpf
    
    the code of the file until where you have to start completion: package ebpf

import (
	"encoding/binary"
	"errors"
	"fmt"
	"reflect"
	"strings"

	"github.com/cilium/ebpf/asm"
	"github.com/cilium/ebpf/btf"
	"github.com/cilium/ebpf/internal"
	"github.com/cilium/ebpf/internal/kconfig"
	"github.com/cilium/ebpf/internal/sysenc"
)

// CollectionOptions control loading a collection into the kernel.
//
// Maps and Programs are passed to NewMapWithOptions and NewProgramsWithOptions.
type CollectionOptions struct {
	Maps     MapOptions
	Programs ProgramOptions

	// MapReplacements takes a set of Maps that will be used instead of
	// creating new ones when loading the CollectionSpec.
	//
	// For each given Map, there must be a corresponding MapSpec in
	// CollectionSpec.Maps, and its type, key/value size, max entries and flags
	// must match the values of the MapSpec.
	//
	// The given Maps are Clone()d before being used in the Collection, so the
	// caller can Close() them freely when they are no longer needed.
	MapReplacements map[string]*Map
}

// CollectionSpec describes a collection.
type CollectionSpec struct {
	Maps     map[string]*MapSpec
	Programs map[string]*ProgramSpec

	// Types holds type information about Maps and Programs.
	// Modifications to Types are currently undefined behaviour.
	Types *btf.Spec

	// ByteOrder specifies whether the ELF was compiled for
	// big-endian or little-endian architectures.
	ByteOrder binary.ByteOrder
}

// Copy returns a recursive copy of the spec.
func (cs *CollectionSpec) Copy() *CollectionSpec {
	if cs == nil {
		return nil
	}

	cpy := CollectionSpec{
		Maps:      make(map[string]*MapSpec, len(cs.Maps)),
		Programs:  make(map[string]*ProgramSpec, len(cs.Programs)),
		ByteOrder: cs.ByteOrder,
		Types:     cs.Types,
	}

	for name, spec := range cs.Maps {
		cpy.Maps[name] = spec.Copy()
	}

	for name, spec := range cs.Programs {
		cpy.Programs[name] = spec.Copy()
	}

	return &cpy
}

// RewriteMaps replaces all references to specific maps.
//
// Use this function to use pre-existing maps instead of creating new ones
// when calling NewCollection. Any named maps are removed from CollectionSpec.Maps.
//
// Returns an error if a named map isn't used in at least one progra
    
func resolveKconfig(m *MapSpec) error {
	ds, ok := m.Value.(*btf.Datasec)
	if !ok {
		return errors.New("map value is not a Datasec")
	}

	type configInfo struct {
		offset uint32
		typ    btf.Type
	}

	configs := make(map[string]configInfo)

	data := make([]byte, ds.Size)
	for _, vsi := range ds.Vars {
		v := vsi.Type.(*btf.Var)
		n := v.TypeName()

		switch n {
		case "LINUX_KERNEL_VERSION":
			if integer, ok := v.Type.(*btf.Int); !ok || integer.Size != 4 {
				return fmt.Errorf("variable %s must be a 32 bits integer, got %s", n, v.Type)
			}

			kv, err := internal.KernelVersion()
			if err != nil {
				return fmt.Errorf("getting kernel version: %w", err)
			}
			internal.NativeEndian.PutUint32(data[vsi.Offset:], kv.Kernel())

		case "LINUX_HAS_SYSCALL_WRAPPER":
			integer, ok := v.Type.(*btf.Int)
			if !ok {
				return fmt.Errorf("variable %s must be an integer, got %s", n, v.Type)
			}
			var value uint64 = 1
			if err := haveSyscallWrapper(); errors.Is(err, ErrNotSupported) {
				value = 0
			} else if err != nil {
				return fmt.Errorf("unable to derive a value for LINUX_HAS_SYSCALL_WRAPPER: %w", err)
			}

			if err := kconfig.PutInteger(data[vsi.Offset:], integer, value); err != nil {
				return fmt.Errorf("set LINUX_HAS_SYSCALL_WRAPPER: %w", err)
			}

		default: // Catch CONFIG_*.
			configs[n] = configInfo{
				offset: vsi.Offset,
				typ:    v.Type,
			}
		}
	}

	// We only parse kconfig file if a CONFIG_* variable was found.
	if len(configs) > 0 {
		f, err := kconfig.Find()
		if err != nil {
			return fmt.Errorf("cannot find a kconfig file: %w", err)
		}
		defer f.Close()

		filter := make(map[string]struct{}, len(configs))
		for config := range configs {
			filter[config] = struct{}{}
		}

		kernelConfig, err := kconfig.Parse(f, filter)
		if err != nil {
			return fmt.Errorf("cannot parse kconfig file: %w", err)
		}

		for n, info := range configs {
			value, ok := kernelConfig[n]
			if !ok {
				return fmt.Errorf("config option %q does not exists for this kernel", n)
			}

			err := kconfig.PutValue(data[info.offset:], info.typ, value)
			if err != nil {
				return fmt.Errorf("problem adding value for %s: %w", n, err)
			}
		}
	}

	m.Contents = []MapKV{{uint32(0), data}}

	return nil
}