private void updateMaterials(Materials materials, Revision revision) {
ProcessOutputStreamConsumer outputStreamConsumer = inMemoryConsumer();
TestSubprocessExecutionContext execCtx = new TestSubprocessExecutionContext();
materials.cleanUp(pipelineDir, outputStreamConsumer);
for (Material material : materials) {
material.updateTo(outputStreamConsumer, pipelineDir, new RevisionContext(revision), execCtx);
}
}
