Package = 
  package TWiki::Response 
Class to encapsulate response data.
Fields:
    * 
status  - response status
    * 
headers - hashref to response headers
    * 
body    - response body
    * 
cookies - hashref to response cookies
Constructs a TWiki::Response object.
 ObjectMethod status ($status) -> $status 
Gets/Sets response status. 
-  $statusis a three digit code, optionally followed by a status string
 ObjectMethod charset ([$charset]) -> $charset 
Gets/Sets response charset. If not defined, defaults to ISO-8859-1, 
just like CGI.pm
                          -status     => $status,
                          -cookie     => $cookie || \@cookies,
                          -attachment => $attachName,
                          -charset    => $charset,
                          -expires    => $expires,
                          -HeaderN    => 
ValueN )
Sets response header. Resonably compatible with CGI. 
Doesn't support -nph, -target and -p3p.
 ObjectMethod headers ({...}) -> $headersHashRef 
Gets/Sets all response headers. Keys are headers name and values
are scalars for single-valued headers or arrayref for multivalued ones.
 ObjectMethod getHeader ([$name]) -> $value 
If called without parameters returns all present header names,
otherwise returns a list (maybe with a single element) of values
associated with $name.
 ObjectMethod deleteHeader ($h1,$h2,...) 
Deletes headers whose names are passed.
 ObjectMethod pushHeader ($name,$value) 
Adds $value to list of values associated with header $name.
Gets/Sets response cookies. Parameter, if passed, 
must be an arrayref.
Elements may be CGI::Cookie objects or raw cookie strings.
Gets/Sets response body.
 ObjectMethod redirect ($uri,$status,$cookies| 
                             -Location => $uri, 
                             -Status   => $status, 
                             -Cookies  => $cookies )
Populate object with redirect response headers.
$uri must be passed. Others are optional.
CGI Compatibility Note: It doesn't support -target or -nph
 ObjectMethod *setDefaultHeaders ({$name=>$value,...}) 
Sets the header, this does not modify the existing key=>value from  
$this->{headers}. Sets only new values.