code: public Collection<String> getTrimmedStringCollection(String name) {
  		String valueString = get(name);
  		if (null == valueString) {
  			Collection<String> empty = new ArrayList<String>();
  			return empty;
  		}
  		return StringUtils.getTrimmedStringCollection(valueString);
  	}
docs: Get the comma delimited values of the <code>name</code> property as
  a collection of <code>String</code>s, trimmed of the leading and trailing whitespace.
  If no such property is specified then empty <code>Collection</code> is returned.
  
  @param name property name.
  @return property value as a collection of <code>String</code>s, or empty <code>Collection</code>