%moveBlocksDown Move blocks and annotations into subsystem.
%   moveBlocksDown(blocksAndAnnotations, destSubsystem) moves the given
%   blocksAndAnnotations down one hierarchy level to the given
%   destSubsystem, preserving all signal connections. All
%   blocksAndAnnotations and the destSubsystem must be in the same
%   subsystem. blocksAndAnnotations can be given as an array of handles or
%   as a cell array with the full Simulink path of the blocks and
%   annotations. destSubsystem can be given as a handle or full Simulink
%   path.
