question: gets the last element . concode_field_sep long[] arr concode_elem_sep long serialVersionUID concode_elem_sep int idx concode_field_sep boolean distinct concode_elem_sep GridLongList asList concode_elem_sep long remove concode_elem_sep void pop concode_elem_sep void truncate concode_elem_sep byte directType concode_elem_sep long[] array concode_elem_sep int hashCode concode_elem_sep long get concode_elem_sep byte fieldsCount concode_elem_sep GridLongList copy concode_elem_sep void add concode_elem_sep void writeExternal concode_elem_sep GridLongList readFrom concode_elem_sep boolean readFrom concode_elem_sep boolean containsAll concode_elem_sep void clear concode_elem_sep boolean isEmpty concode_elem_sep long removeIndex concode_elem_sep int replaceValue concode_elem_sep GridLongList sort concode_elem_sep void writeTo concode_elem_sep boolean writeTo concode_elem_sep boolean contains concode_elem_sep int size concode_elem_sep int removeValue concode_elem_sep void addAll concode_elem_sep GridLongList addAll concode_elem_sep GridLongList copyWithout concode_elem_sep void onAckReceived concode_elem_sep boolean equals concode_elem_sep void readExternal concode_elem_sep String toString
target: long function ( ) { return arr [ idx - 1 ] ; }