nl_tokens: If streaming then the stack is sticky
pl_tokens: function updateStickyStack ( stickyStack , token , data ) { if ( token !== 'text' ) { stickyStack = stickyStack . filter ( notCategory ( categoryForCode ( data ) ) ) ; stickyStack . push ( { token : <mask> , data : data , category : categoryForCode ( data ) } ) ; } return stickyStack ; }