Fix issue in Client where this should be self (#708)
Fix issue in Client where this should be self (#708)

Signed-off-by: Michael Haan <6529ed87b3f4b4397f67efcfc3df1256c1b35fca@gmail.com>
SOHU-Co/kafka-node,SOHU-Co/kafka-node,SOHU-Co/kafka-node