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namespace Guzzle\Http\Message;
/**
* Request and response message interface
*/
interface MessageInterface
{
/**
* Get application and plugin specific parameters set on the message.
*
* @return \Guzzle\Common\Collection
*/
public function getParams();
/**
* Add a header to an existing collection of headers.
*
* @param string $header Header name to add
* @param string $value Value of the header
*
* @return self
*/
public function addHeader($header, $value);
/**
* Add and merge in an array of HTTP headers.
*
* @param array $headers Associative array of header data.
*
* @return self
*/
public function addHeaders(array $headers);
/**
* Retrieve an HTTP header by name. Performs a case-insensitive search of all headers.
*
* @param string $header Header to retrieve.
*
* @return Header|null
*/
public function getHeader($header);
/**
* Get all headers as a collection
*
* @return \Guzzle\Http\Message\Header\HeaderCollection
*/
public function getHeaders();
/**
* Check if the specified header is present.
*
* @param string $header The header to check.
*
* @return bool
*/
public function hasHeader($header);
/**
* Remove a specific HTTP header.
*
* @param string $header HTTP header to remove.
*
* @return self
*/
public function removeHeader($header);
/**
* Set an HTTP header and overwrite any existing value for the header
*
* @param string $header Name of the header to set.
* @param mixed $value Value to set.
*
* @return self
*/
public function setHeader($header, $value);
/**
* Overwrite all HTTP headers with the supplied array of headers
*
* @param array $headers Associative array of header data.
*
* @return self
*/
public function setHeaders(array $headers);
/**
* Get an array of message header lines (e.g. ["Host: example.com", ...])
*
* @return array
*/
public function getHeaderLines();
/**
* Get the raw message headers as a string
*
* @return string
*/
public function getRawHeaders();
}