question: to be invoked only by the jackson json serializer . concode_field_sep String PERSIST_CONFIG concode_elem_sep String RELOAD_CONFIG concode_elem_sep boolean isInitialized concode_elem_sep Path persistDirPath concode_elem_sep Configuration conf concode_elem_sep String className concode_elem_sep String COMMIT_STATE_FILENAME concode_elem_sep String timeStamp concode_elem_sep long VERSION concode_elem_sep boolean reload concode_elem_sep HashMap<String,StatePair> pool concode_elem_sep String CURRENT_STATE_FILENAME concode_elem_sep boolean isUpdated concode_elem_sep String DIR_CONFIG concode_elem_sep boolean persist concode_elem_sep State state concode_field_sep long getVersion concode_elem_sep void reloadState concode_elem_sep void read concode_elem_sep void setVersion concode_elem_sep boolean isUpdated concode_elem_sep void setClassName concode_elem_sep State getState concode_elem_sep State getState concode_elem_sep void reload concode_elem_sep void setState concode_elem_sep String getClassName concode_elem_sep void initialize concode_elem_sep void persist concode_elem_sep void addState concode_elem_sep void write concode_elem_sep void setStates
target: HashMap < String , StatePair > function ( ) { return pool ; }