Location of file containing the template body. The URL must point to a template (max size: 307,200 bytes) located in an S3 bucket in the
            same region as the stack. For more information, go to Template Anatomy in the AWS CloudFormation
            User Guide. Conditional: You must pass TemplateURL or TemplateBody. If both are passed, only TemplateBody is used.
             
            
Constraints:
 Declaration Syntax
 Declaration Syntax| C# | 
public string TemplateURL { get; set; }