Moves a class up or down depending on the given offset, where a positive
offset moves the class down and a negative offset up. The offset is truncated
if the resulting index is outside the class list. It retains the visibility of
the class by adding public/protected sections when needed, and merges sections
of the same type if the class is moved from a section it was alone in. Returns
true if the move was successful, otherwise false.
function moveClass
input TypeName className "the class that should be moved";
input Integer offset "Offset in the class list.";
output Boolean result;
end moveClass;