# File lib/json/pure/generator.rb, line 129
        def self.from_state(opts)
          case
          when self === opts
            opts
          when opts.respond_to?(:to_hash)
            new(opts.to_hash)
          when opts.respond_to?(:to_h)
            new(opts.to_h)
          else
            SAFE_STATE_PROTOTYPE.dup
          end
        end