How can I get the text in a EmptyTableWidget in GWT CellTable

How can I get the text in a EmptyTableWidget in GWT CellTable

References

Reference NO 1

http://www.gwtproject.org/javadoc/latest/com/google/gwt/user/cellview/client/CellTable.html

Reference NO 2

http://stackoverflow.com/questions/8189991/how-do-i-programmatically-get-info-about-a-celltables-headers

Reference NO 3

http://www.mytechtip.com/2010/11/gwt-celltable-example-using_8168.html

Reference NO 4

http://comments.gmane.org/gmane.org.google.gwt/64549

Reference NO 5

http://crazygui.wordpress.com/2011/11/01/how-to-skin-a-gwt-celltable/

Reference NO 6

http://vaadin.com/download/prerelease/7.0/7.0.0/7.0.0.rc2/docs/api/com/google/gwt/user/cellview/client/CellTable.html

Reference NO 7

http://grokbase.com/t/gg/google-web-toolkit/125fb1j3mb/celltable-loading-state

Reference NO 8

http://grepcode.com/file/repo1.maven.org/maven2/com.google.gwt/gwt-user/2.3.0/com/google/gwt/user/cellview/client/CellTable.java