wml dom wml WMLTableElement wmltableelementimpl wmlelementimpl wmltableelement serialversionuid l wmltableelementimpl wmldocumentimpl owner tagname owner tagname setcolumns newvalue newvalue getcolumns newvalue newvalue setxmllang newvalue newvalue getxmllang setalign newvalue newvalue getalign settitle newvalue newvalue gettitle setid newvalue newvalue getid