question: extract the table id from the key into the given text concode_field_sep Logger log concode_elem_sep ByteSequence BYTE_SEQ_NAME concode_elem_sep ULongLexicoder longEncoder concode_elem_sep ByteSequence BYTE_SEQ_NAME concode_elem_sep Text NAME concode_elem_sep Text NAME concode_elem_sep Text ROW_SEPARATOR concode_elem_sep Text NAME concode_field_sep Mutation add concode_elem_sep Mutation add concode_elem_sep Mutation add concode_elem_sep Mutation createMutation concode_elem_sep ReplicationTarget getTarget concode_elem_sep ReplicationTarget getTarget concode_elem_sep long getTimeClosed concode_elem_sep long getTimeClosed concode_elem_sep void limit concode_elem_sep void limit concode_elem_sep void limit concode_elem_sep void _getFile concode_elem_sep void getFile concode_elem_sep void getFile concode_elem_sep String getFile concode_elem_sep String getFile
target: void function ( Key arg0 , Text arg1 ) { Preconditions . checkNotNull ( arg0 ) ; Preconditions . checkNotNull ( arg1 ) ; arg0 . getColumnQualifier ( arg1 ) ; }