|  | # frozen_string_literal: true
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							|  | 
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							|  | class AddSilentToMentions < ActiveRecord::Migration[5.2]
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							|  |   disable_ddl_transaction!
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							|  | 
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							|  |   def up
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							|  |     safety_assured do
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							|  |       add_column(
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							|  |         :mentions,
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							|  |         :silent,
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							|  |         :boolean,
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							|  |         null: false,
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							|  |         default: false
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							|  |       )
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							|  |     end
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							|  |   end
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							|  | 
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							|  |   def down
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							|  |     remove_column :mentions, :silent
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							|  |   end
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							|  | end
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