How to use setfield and getfield with colons or vector indices

There are times when getfield and set field are useful, but they are documented poorly. Suppose I have the following

    >> s.a = 1;
    >> s.b = 2;
    >> s.c.d = 34;

    >> sarray = [s,s,s,s,s];

    >> getfield(sarray, {3}, 'a') % get s(3).a, fine
    >> getfield(sarray, {3}, 'c', 'd') % get s(3).c.d, fine

however if I try to access or assign to multiple indices, getfield just gets the first of the indices and setfield generates an error. For example:

    >> sarray = setfield(sarray, {3}, 'c', 'd', 50); % set s(3).c.d to 50, fine

    >> x = getfield(sarray, {[3,4]}, 'c', 'd');
    >> disp(x)
        50

    >> x = getfield(sarray, {':'}, 'c', 'd');
    >> disp(x)
        50

    >> sarray = setfield(sarray, {[3,4]}, 'c', 'd', 50);
       Error using setfield (line 56)
       Expected one output from a curly brace or dot indexing expression, but
       there were 2 results.

    >> sarray = setfield(sarray, {':'}, 'c', 'd', 50);
       Error using setfield (line 56)
       Expected one output from a curly brace or dot indexing expression, but
       there were 2 results.

The documentation does hint that array indices can be used:

"If you specify a single colon operator for an index input, enclose it in single quotation marks: ':'"

So I would expect that there is some way to get the fields from multiple structs. Does anyone know how?