question: join string array to string . concode_field_sep PlaceHolder placeHolder concode_field_sep String toTitle concode_elem_sep boolean isLowerCase concode_elem_sep String toCapital concode_elem_sep boolean isUpperCase
target: String function ( String [ ] arg0 , String arg1 ) { return join ( java . util . Arrays . asList ( arg0 ) , arg1 ) ; }