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class AddIndexOnIssuesNestedSet < ActiveRecord::Migration[4.2] def self.up add_index :issues, [:root_id, :lft, :rgt] end def self.down remove_index :issues, [:root_id, :lft, :rgt] end end g/xmlgraphics-fop.git/atom/NOTICE?h=temp/ssteiner-pdfbox3' type='application/atom+xml'/>