# File lib/cucumber/parser/feature.rb, line 1758
      def _nt_white
        start_index = index
        if node_cache[:white].has_key?(index)
          cached = node_cache[:white][index]
          @index = cached.interval.end if cached
          return cached
        end

        s0, i0 = [], index
        loop do
          i1 = index
          r2 = _nt_space
          if r2
            r1 = r2
          else
            r3 = _nt_eol
            if r3
              r1 = r3
            else
              @index = i1
              r1 = nil
            end
          end
          if r1
            s0 << r1
          else
            break
          end
        end
        r0 = instantiate_node(SyntaxNode,input, i0...index, s0)

        node_cache[:white][start_index] = r0

        r0
      end