nl: lock cache access . concode_field_sep ReentrantLock lock concode_elem_sep LongSparseArray<Reference<T>> map concode_field_sep void unlock concode_elem_sep T get concode_elem_sep void clear concode_elem_sep void putNoLock concode_elem_sep T getNoLock concode_elem_sep void put concode_elem_sep void remove concode_elem_sep void remove
code: void function ( ) { lock . lock ( ) ; }