code: def plugin(name, module=''):
          
          if module:
              mod = projex.importfile(module)
              if mod:
                  return getattr(mod, nstr(name), None)
  
          return Builder._plugins.get(nstr(name))
docs: Returns the plugin for the given name.  By default, the
          base Builder instance will be returned.
          
          :param      name | <str>