func (qi *QuerierInstance) Get(absoluteDocumentKey []byte) ([]byte, error) {
	return qi.db.Get(absoluteDocumentKey)
}
direct db getter
package querier
import (
	"fmt"
	"github.com/terra-project/mantle-sdk/db"
	"github.com/terra-project/mantle-sdk/db/kvindex"
	"github.com/terra-project/mantle-sdk/querier/queryhandler"
)
type QuerierInstance struct {
	db         db.DB
	kvindexMap kvindex.KVIndexMap
}
func NewQuerier(db db.DB, kvindexMap kvindex.KVIndexMap) Querier {
	return &QuerierInstance{
		db:         db,
		kvindexMap: kvindexMap,
	}
}
var handlersList = []queryhandler.QueryHandlerBuilder{
	queryhandler.NewHeightResolver,  
	queryhandler.NewRangeResolver,   
	queryhandler.NewSeekResolver,    
	queryhandler.NewSequentialResolver,
}