question: is empty . concode_field_sep List<E> mElements concode_elem_sep int mSize concode_field_sep E pop concode_elem_sep E set concode_elem_sep int size concode_elem_sep E get concode_elem_sep void clear concode_elem_sep void push concode_elem_sep E remove concode_elem_sep E peek
target: boolean function ( ) { return mSize == 0 ; }