question: adds a header with name and value . prefer this method for multiply-valued headers like `` set-cookie '' . concode_field_sep Request request concode_elem_sep RawHeaders headers concode_elem_sep int code concode_elem_sep Reader reader concode_elem_sep RawHeaders headers concode_elem_sep Response redirectedBy concode_elem_sep Body body concode_field_sep Request request concode_elem_sep List<String> headers concode_elem_sep Charset charset concode_elem_sep int code concode_elem_sep String headerName concode_elem_sep String string concode_elem_sep InputStream byteStream concode_elem_sep Set<String> headerNames concode_elem_sep Response redirectedBy concode_elem_sep Builder redirectedBy concode_elem_sep String headerValue concode_elem_sep void onFailure concode_elem_sep int headerCount concode_elem_sep Body body concode_elem_sep Builder body concode_elem_sep RawHeaders rawHeaders concode_elem_sep Builder rawHeaders concode_elem_sep Reader charStream concode_elem_sep boolean onResponse concode_elem_sep Response build concode_elem_sep boolean ready concode_elem_sep byte[] bytes concode_elem_sep String header concode_elem_sep String header concode_elem_sep Builder header concode_elem_sep long contentLength concode_elem_sep MediaType contentType
target: Builder function ( String arg0 , String arg1 ) { headers . add ( arg0 , arg1 ) ; return this ; }