anchor.diff:  
   *Description*: [.description]#Formats a number as a date/time according to the format specified by the argument. The argument
   	must be a String that is a valid Java SimpleDateFormat format. The Subject is expected to be a Number that
  -	represents the number of milliseconds since Midnight GMT January 1, 1970.#
  +	represents the number of milliseconds since Midnight GMT on January 1, 1970.#
   
   *Subject Type*: [.subject]#Number#
   
  
positive.code: 
  *Return Type*: [.returnType]#Boolean#
  
  *Examples*: `${filename:notNull()}` returns `true` if the "filename" attribute exists. It returns "false" if the attribute
  	does not exist.
  
  
  
negative.code: | `${filename:substringBefore('.')}` | `a brand new filename`
  | `${filename:substringBefore(' ')}` | `a`
  | `${filename:substringBefore(' n')}` | `a brand`
  | `${filename:substringBefore('missing')}` | `a brand new filename.txt`
  |======================================================================
  
  
  