docs: function(e, errorForStack) {
      this.message = e.message;
      this.name = e.name;
      if (e.line) this.line = e.line;
      if (e.sourceId) this.sourceId = e.sourceId;
      if (e.stack && errorForStack)
        this.stack = e.stack + '\n' + errorForStack.stack;
      if (e.stackArray) this.stackArray = e.stackArray;
    }