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: insert_clauses.go
    path of file: ./repos/corteza/server/vendor/github.com/doug-martin/goqu/v9/exp
    
    the code of the file until where you have to start completion: package exp

type (
	InsertClauses interface {
		CommonTables() []CommonTableExpression
		CommonTablesAppend(cte CommonTableExpression) InsertClauses

		HasInto() bool
		clone() *insertClauses

		Cols() ColumnList
    
func (ic *insertClauses) clone() *insertClauses {
	return &insertClauses{
		commonTables: ic.commonTables,
		cols:         ic.cols,
		into:         ic.into,
		returning:    ic.returning,
		alias:        ic.alias,
		rows:         ic.rows,
		values:       ic.values,
		from:         ic.from,
		conflict:     ic.conflict,
	}
}