Getting envisage services in a Handler

Question

I'm using envisage workbance and I want to get the service in the Handler. In the _tcp_send_changed function how can I get the services. In the plugin there is the self.application.get_service(....) but here how can I reach them?

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UPDATED

This is my view

class MCLidarGUIView( HasTraits ):         
    traits_ui_view = View( 
        VGroup( 
            HGroup( 
                Item( 'lidar_list',
                    show_label = False,
                    editor = TabularEditor( 
                        show_titles = False,
                        selected = 'selected',
                        editable = False,
                        multi_select = True,
                        adapter = LidarAdapter()                    
                    ),
                ),
            ),
            Item( 
                 "lidars_command"
            ),
            HGroup( 
                   Item( 'handler.tcp_send',
                        show_label = False,
                        editor = ButtonEditor( label = "TCP:Send" )                        
                ),
            )
        ),

        id = 'forwind.lidarapi.giuview',
        resizable = True,
        handler = MCLidarActions()

    )    

    lidar_list = [LidarObject( lidar_name = "No Connected Lidar" )]
    lidars_command = '' 

and this is my handler:

class MCLidarActions( Handler ):

    tcp_send = Event 

    def object__updated_changed( self, info ):
        print info;
        pass;   

    def _tcp_send_changed( self ):
        print( " info" ) 

Answer 1

class MyHandler(Handler):

def __init__(self, application, **traits):
     Handler.__init__(self, **traits)
     self.application = application

...

Answer 2

I'm just guessing but from the documentation it seams like you have to register a service first. Maybe show us a bit more code so we can help better.