Part 0
  ImportSet
     - pkg/compiler/test/custom_split/data/two_branch/main.dart prefix: step1
     - pkg/compiler/test/custom_split/data/two_branch/main.dart prefix: step2a
     - pkg/compiler/test/custom_split/data/two_branch/main.dart prefix: step2b
  References
     - pkg/compiler/test/custom_split/data/two_branch/shared.dart::@methods::step12a
     - pkg/compiler/test/custom_split/data/two_branch/shared.dart::@methods::step12ab
     - pkg/compiler/test/custom_split/data/two_branch/shared.dart::@methods::step12b
     - pkg/compiler/test/custom_split/data/two_branch/step1.dart::@methods::step
  Constants
     - StringConstant("12a")
     - StringConstant("12ab")
     - StringConstant("12b")

Part 1
  ImportSet
     - pkg/compiler/test/custom_split/data/two_branch/main.dart prefix: step2a
  References
     - pkg/compiler/test/custom_split/data/two_branch/step2a.dart::@methods::step
  Constants

Part 2
  ImportSet
     - pkg/compiler/test/custom_split/data/two_branch/main.dart prefix: step2b
  References
     - pkg/compiler/test/custom_split/data/two_branch/step2b.dart::@methods::step
  Constants

Part 3
  ImportSet
     - pkg/compiler/test/custom_split/data/two_branch/main.dart prefix: step2a
     - pkg/compiler/test/custom_split/data/two_branch/main.dart prefix: step2b
  References
     - pkg/compiler/test/custom_split/data/two_branch/shared.dart::@methods::step2ab
  Constants
     - StringConstant("2ab")
