question: adjust the first and list item position by distance , positive or negative . concode_field_sep boolean m_paging concode_elem_sep int m_last concode_elem_sep int m_first concode_field_sep boolean isPaging concode_elem_sep int getFirst concode_elem_sep Object clone concode_elem_sep void setPaging concode_elem_sep int getLast concode_elem_sep void setPosition concode_elem_sep void validate concode_elem_sep void validate
target: void function ( int arg0 ) { m_first += arg0 ; m_last += arg0 ; validate ( ) ; }