---
AWSTemplateFormatVersion: "2010-09-09"
Description: >
  Test Join Functions
Resources:
  myInstance:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: ami-1234
      UserData:
        Fn::Base64:
          Fn::Join:
          - ''
          - 'Test function'
          - 'another item'
  myInstance2:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: ami-1234
      UserData:
        Fn::Base64:
          Fn::Join: !Ref myInstance