code: function() {
      var streams = this.sourceStreams = toArray(arguments);
  
      if(streams.length > 1) {
        this.resultStream = Bacon.mergeAll(streams);
      } else {
        this.resultStream = streams[0];
      }
  
      this.streamsHash = this._computeStreamsHash('any', streams);
  
      // invalidate 'all'
      return this;
    }
docs: Produce a side effect when any of the Law events occur
  
  @function
  @name whenAny
  @instance
  @memberof Law