new

# File activerecord/lib/active_record/migration.rb, line 1223
    def initialize(migrations_paths, schema_migration = nil, internal_metadata = nil)
      @migrations_paths = migrations_paths
      @schema_migration = schema_migration || SchemaMigration.new(connection_pool)
      @internal_metadata = internal_metadata || InternalMetadata.new(connection_pool)
    end