Use more concise syntax for InputSilo in Hopper example.
Use more concise syntax for InputSilo in Hopper example.

opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core,opensim-org/opensim-core