code: func NewBuilder(handle *Handle) *Builder {
  	b := new(Builder)
  	b.handle = handle
  	b.is = &infoSchema{
  		schemaMap:           map[string]*schemaTables{},
  		sortedTablesBuckets: make([]sortedTables, bucketCount),
  	}
  	return b
  }
docs: // NewBuilder creates a new Builder with a Handle.