code: function( text ) {
  			if(modules.utils.isString( text )){
  				text = text.toLowerCase();
  				if(modules.utils.startWith(text, 'p') ){
  					return true;
  				}
  			}
  			return false;
  		}
docs: simple test of whether ISO date string is a duration  i.e.  PY17M or PW12
  
  @param  {String} text
  @return {Boolean}