  In this paper we formulate and lay the foundations for the K-theoretic
Farrell-Jones Conjecture for the Hecke algebra of totally disconnected groups.
The main result of his paper is the proof that it passes to closed subgroups.
Moreover, we carry out some constructions such as the diagonal tensor product
and prove some results that will be used in the actual proof of the
Farrell-Jones Conjecture for reductive p-adic groups, which will appear in a
different paper.
