Channel endpoint creation request. The structure varies based on the type field.
ChannelEndpointsControllerCreateChannelEndpointRequestBody.CreateSlackChannel(/* values here */);ChannelEndpointsControllerCreateChannelEndpointRequestBody.CreateSlackUser(/* values here */);ChannelEndpointsControllerCreateChannelEndpointRequestBody.CreateWebhook(/* values here */);ChannelEndpointsControllerCreateChannelEndpointRequestBody.CreatePhone(/* values here */);ChannelEndpointsControllerCreateChannelEndpointRequestBody.CreateMsTeamsChannel(/* values here */);ChannelEndpointsControllerCreateChannelEndpointRequestBody.CreateMsTeamsUser(/* values here */);