question: returns the given string surrounded by single quotes , or null if the given string is null . concode_field_sep String toAppend concode_elem_sep String[] strings concode_field_sep String with concode_elem_sep String with concode_elem_sep boolean isNullOrEmpty concode_elem_sep String concat concode_elem_sep StringsToJoin join concode_elem_sep StringsToJoin join concode_elem_sep String to concode_elem_sep String formatIfArgs concode_elem_sep StringToAppend append
target: String function ( String arg0 ) { return arg0 != null ? concat ( "srini_string" , arg0 , "srini_string" ) : null ; }