question: returns the number of currently registered writers . concode_field_sep Map<ResultPartitionID,ResultPartitionWriter> registeredWriters concode_field_sep void registerWriterForIncomingTaskEvents concode_elem_sep void unregisterWriter concode_elem_sep boolean publish concode_elem_sep void clearAll
target: int function ( ) { synchronized ( registeredWriters ) { return registeredWriters . size ( ) ; } }