new (DataMapper::Associations::OneToOne::Relationship)

    # File lib/dm-core/associations/one_to_one.rb, line 60
            def initialize(name, target_model, source_model, options = {})
              klass = options.key?(:through) ? ManyToMany::Relationship : OneToMany::Relationship
              target_model ||= Extlib::Inflection.camelize(name).freeze
              @relationship = klass.new(name, target_model, source_model, options)
            end