code: def DocbookXInclude(env, target, source, *args, **kw):
      
      # Init list of targets/sources
      target, source = __extend_targets_sources(target, source)
  
      # Setup builder
      __builder = __select_builder(__xinclude_lxml_builder,__xinclude_libxml2_builder,__xmllint_builder)
              
      # Create targets
      result = []
      for t,s in zip(target,source):
          result.extend(__builder.__call__(env, t, s, **kw))
          
      return result
docs: A pseudo-Builder, for resolving XIncludes in a separate processing step.