long function ( ) { return - 1 ; }
returns the number of bytes that will be written to out in a call to #writeto , or -1 if that count is unknown . concode_field_sep PlaceHolder placeHolder concode_field_sep void writeTo concode_elem_sep RequestBody create concode_elem_sep RequestBody create concode_elem_sep RequestBody create concode_elem_sep RequestBody create concode_elem_sep RequestBody create concode_elem_sep MediaType contentType