    # File lib/json/pure/generator.rb, line 138
            def initialize(opts = {})
              @indent                = ''
              @space                 = ''
              @space_before          = ''
              @object_nl             = ''
              @array_nl              = ''
              @allow_nan             = false
              @ascii_only            = false
              @quirks_mode           = false
              @buffer_initial_length = 1024
              configure opts
            end