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: member.go
    path of file: ./repos/ferret/pkg/runtime/expressions
    
    the code of the file until where you have to start completion: package expressions

import (
	"context"

	"github.com/pkg/errors"

	"github.com/MontFerret/ferret/pkg/runtime/core"
	"github.com/MontFerret/ferret/pkg/runtime/values"
)

type MemberExpression struct {
	src             core.SourceMap
	sou
    
func NewMemberExpression(src core.SourceMap, source core.Expression, path []*MemberPathSegment, preCompiledPath []core.Value) (*MemberExpression, error) {
	if source == nil {
		return nil, core.Error(core.ErrMissedArgument, "source")
	}

	if len(path) == 0 {
		return nil, core.Error(core.ErrMissedArgument, "path expressions")
	}

	return &MemberExpression{src, source, path, preCompiledPath}, nil
}