ENTITY_HEADERS constant

dynamic const ENTITY_HEADERS = const [ALLOW, CONTENT_ENCODING, CONTENT_LANGUAGE, CONTENT_LENGTH, CONTENT_LOCATION, CONTENT_MD5, CONTENT_RANGE, CONTENT_TYPE, EXPIRES, LAST_MODIFIED]

Implementation 

static const ENTITY_HEADERS = const [
  ALLOW,
  CONTENT_ENCODING,
  CONTENT_LANGUAGE,
  CONTENT_LENGTH,
  CONTENT_LOCATION,
  CONTENT_MD5,
  CONTENT_RANGE,
  CONTENT_TYPE,
  EXPIRES,
  LAST_MODIFIED
]