code: function addPathContext(pathContexts) {
    _each(pathContexts, pathContext => {
      if (pathContext.paths) {
        pathContext.paths = _arrayify(pathContext.paths)
      }
  
      if (pathContext.regexes) {
        pathContext.regexes = _arrayify(pathContext.regexes)
      }
  
      if (pathContext.contexts) {
        pathContext.contexts = _arrayify(pathContext.contexts)
      }
    })
    _addUniqueItems(_pathContexts, pathContexts)
    return _pathContexts
  }
docs: Add a path context to genie's pathContexts
  @param {Array.<PathContext>} pathContexts The path context to add
  @returns {Array.<PathContext>} The new path contexts
  @public