a #TpBaseClient instance
a #TpAccount with %TP_ACCOUNT_FEATURE_CORE, and any other features added via tp_base_client_add_account_features() or tp_simple_client_factory_add_account_features(), prepared if possible
a #TpConnection with %TP_CONNECTION_FEATURE_CORE, and any other features added via tp_base_client_add_connection_features(), or tp_simple_client_factory_add_connection_features(), prepared if possible
a #GList of #TpChannel, each with %TP_CHANNEL_FEATURE_CORE, and any other features added via tp_base_client_add_channel_features() or tp_simple_client_factory_add_channel_features(), prepared if possible
a #TpChannelDispatchOperation having %TP_CHANNEL_DISPATCH_OPERATION_FEATURE_CORE prepared if possible
a #TpObserveChannelsContext representing the context of this D-Bus call
Signature of the implementation of the AddDispatchOperation method.
This function must call either tp_add_dispatch_operation_context_accept(), tp_add_dispatch_operation_context_delay() or tp_add_dispatch_operation_context_fail() on
context
before it returns.The implementation can then use tp_channel_dispatch_operation_handle_with_async() to approve handling of the channels, or tp_channel_dispatch_operation_claim_async() to take responsibility for handling or closing them".