The sequence of values.
The sequence of values. This value is protected and mutable
since subclasses might initially set it to a
null value and then initialize
Append the given headers
Retrieves the first header value which is associated with the given key.
Optionally returns the first header value associated with a key.
Retrieve all header values associated with the given key.
The headers as a sequence of name-value pairs.
Retrieve all header keys
Remove any headers with the given keys
Append the given headers, replacing any existing headers having the same keys
Transform the Headers to a Map
Transform the Headers to a Map by ignoring multiple values.
The HTTP headers set.