# File lib/dm-core/collection.rb, line 535 def initialize(query, &block) assert_kind_of 'query', query, Query unless block_given? # It can be helpful (relationship.rb: 112-13, used for SEL) to have a non-lazy Collection. block = lambda { |c| } end @query = query @key_properties = model.key(repository.name) @cache = {} super() load_with(&block) end