An object that represents the action of replacing or adding a header field. All prior occurrences of the header with the given name are removed and then the header field with specified value is added.
A header field name that conforms to RFC 7230.
Example: {@code example_header_name}
A header field value that conforms to RFC 7230.
Example: {@code example_value}
An object that represents the action of replacing or adding a header field. All prior occurrences of the header with the given name are removed and then the header field with specified value is added.