(Since version 0.6.0) Use binaryBodyOption instead.
(Since version 0.6.0) Use bodyOption instead.
(Since version 0.6.0) Use cookieOption(name) instead.
(Since version 0.6.0) Use headerOption(name) instead.
(Since version 0.6.0) Use paramOption(name) instead
(Since version 0.6.0) Use params(name) instead.
(Since version 0.6.0) Use binaryBody instead.
(Since version 0.6.0) Use body instead.
(Since version 0.6.0) Use cookie(name) instead.
(Since version 0.6.0) Use header(name) instead.
(Since version 0.6.0) Use param(name) instead
(Since version 0.6.0) Use paramsNonEmpty(name) instead.