How a message body is encoded for transport
unknown / error
no body is present (which is not the same as a 0-length body, and only occurs in certain places)
Content-Length encoding
Response body ends when the connection is closed
chunked encoding (currently only supported for response)
multipart/byteranges (Reserved for future use: NOT CURRENTLY IMPLEMENTED)
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
Returns an array containing the constants of this enum type, in the order they're declared.