code: function group(configSetters) {
    assertConfigSetters(configSetters)
  
    const pre = getHooks(configSetters, 'pre')
    const post = getHooks(configSetters, 'post')
  
    const groupBlock = context => config => invokeConfigSetters(configSetters, context, config)
  
    return Object.assign(groupBlock, { pre, post })
  }
docs: Combines an array of blocks to a new joined block. Running this single block
  has the same effect as running all source blocks.
  
  @param {Function[]} configSetters  Array of functions as returned by webpack blocks.
  @return {Function}