files: 0.725
device: 0.657
network: 0.564
performance: 0.529
permissions: 0.426
socket: 0.410
PID: 0.379
other: 0.286
debug: 0.262
vnc: 0.261
boot: 0.248
semantic: 0.239
KVM: 0.144
graphic: 0.126

QAPI: Avoid generating empty source files