Make ids of IDPatterns easier accessible for CustomFeatures

Introduce helper class that contains the coding, the pattern code just
delegates there.

Bug: 573343
Change-Id: Ia98011514e81cd782a085a907800a000bc9bb681
3 files changed
tree: 988a0fbc1be402a6c677baa5c3c220dec7931295
  1. CONTRIBUTING.md
  2. examples/
  3. features/
  4. parent/
  5. plugins/
  6. releng/
  7. tests/