requestHeaders constant

List<String> const requestHeaders = const [acceptHeader, acceptCharsetHeader, acceptEncodingHeader, acceptLanguageHeader, authorizationHeader, expectHeader, fromHeader, hostHeader, ifMatchHeader, ifModifiedSinceHeader, ifNoneMatchHeader, ifRangeHeader, ifUnmodifiedSinceHeader, maxForwardsHeader, proxyAuthorizationHeader, rangeHeader, refererHeader, teHeader, userAgentHeader]

Implementation 

static const requestHeaders = const [
  acceptHeader,
  acceptCharsetHeader,
  acceptEncodingHeader,
  acceptLanguageHeader,
  authorizationHeader,
  expectHeader,
  fromHeader,
  hostHeader,
  ifMatchHeader,
  ifModifiedSinceHeader,
  ifNoneMatchHeader,
  ifRangeHeader,
  ifUnmodifiedSinceHeader,
  maxForwardsHeader,
  proxyAuthorizationHeader,
  rangeHeader,
  refererHeader,
  teHeader,
  userAgentHeader
]