code: def generatePlugin(sourcePath, buildPath = None):
      
      if ( buildPath is None ):
          buildPath = BUILD_PATH
          
      pkg_name = projex.packageFromPath(sourcePath)
      module = os.path.basename(sourcePath).split('.')[0]
      if module != '__init__':
          pkg_name += '.' + module
      
      try:
          __import__(pkg_name)
      except ImportError, e:
          logging.exception(e)
          return
      
      module = sys.modules.get(pkg_name)
      if not module:
          return
          
      if not hasattr(module, '__designer_plugins__'):
          logger.info('%s has no __designer_plugins__ defined.' % pkg_name)
          return
      
      if not os.path.exists(buildPath):
          os.mkdir(buildPath)
      
      for plug in module.__designer_plugins__:
          output_path = os.path.join(buildPath, 
                                     '%splugin.py' % plug.__name__.lower())
          
          # generate the options
          options = {}
          options['module'] = pkg_name
          options['class']  = plug.__name__
          
          # save the plugin
          f = open(output_path, 'w')
          f.write(PLUGIN_DEF % options)
          f.close()
docs: Generates a particular ui plugin for ths system and imports it.
      
      :param      widgetPath  | <str>
                  buildPath   | <str> || None