id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
7734	changed empty string check in Tile.putValue(...) and added documentation	Locked	team	"Changed the sanity check

{{{ if (value == null || """".equals(value)) {}}}

{{{ if (value == null || value.isEmpty()) { }}}

and added some javadocs"	enhancement	closed	normal		Core		fixed