roslaunch.core.Node:
Data structure for storing information about a desired node in the
ROS system Corresponds to the 'node' tag in the launch
specification.
roslaunch.core.Test:
A Test is a Node with special semantics that it performs a
unit/integration test.
roslaunch.core.Param:
Data structure for storing information about a desired parameter in
the ROS system Corresponds to the 'param' tag in the launch
specification.
roslaunch.server.ROSLaunchChildHandler:
XML-RPC API implementation for child roslaunches NOTE: the client
handler runs a process monitor so that it can track processes
across requests