public Boolean getBooleanTag(String key) {
		Object value = tags.get(key);
		if (value instanceof Boolean) {
			return (Boolean) value;
		}
		return null;
	}
public Boolean getBooleanTag ( String key ) { Object value = tags . get ( key ) ; if ( value instanceof Boolean ) { return ( Boolean ) value ; } return null ; }
This method returns the tag value, associated with the supplied key, if it exists and has a {@link Boolean}
type.

@param key The tag key
@return The value, if exists and is a {@link Boolean} type, otherwise null