question: check whether two map are same size or both null . concode_field_sep Object newValue concode_elem_sep String fieldName concode_elem_sep Object oldValue concode_field_sep Object getValue concode_elem_sep void setFieldName concode_elem_sep boolean hasChanged concode_elem_sep BaseColumnFieldDiff getDiff concode_elem_sep void setValue concode_elem_sep void setOldValue concode_elem_sep Object getOldValue concode_elem_sep String getFieldName
target: boolean function ( Map arg0 , Map arg1 ) { if ( arg0 == null && arg1 == null ) { return true ; } else if ( arg0 != null && arg1 != null && arg0 . size ( ) == arg1 . size ( ) ) { return true ; } return false ; }