object
method _QueryInterface : 'a interface -> 'a
method canHandleContent : string -> bool -> string Mozilla.XPCOM.out
method doContent :
string ->
bool ->
#Mozilla.XPCOM.request ->
Mozilla.XPCOM.streamListener Mozilla.XPCOM.out -> bool
method isPreferred : string -> string Mozilla.XPCOM.out -> bool
method onStartURIOpen : #Mozilla.XPCOM.uRI -> bool
end