Unable to create injector, see the following errors:

1) [Guice/DuplicateMapKey]: Duplicate key "class com.google.inject.errors.DuplicateMapKeyErrorTest$Foo" found in Map<Class<?>, String>.

Duplicates:
  Key: "class com.google.inject.errors.DuplicateMapKeyErrorTest$Foo"
  Bound at:
    1 : DuplicateMapKeyErrorTest$ClassKeyMapBinderModule.provideFoo(DuplicateMapKeyErrorTest.java:104)
    2 : DuplicateMapKeyErrorTest$ClassKeyMapBinderModule.provideFoo2(DuplicateMapKeyErrorTest.java:110)

MapBinder declared at:
  DuplicateMapKeyErrorTest$ClassKeyMapBinderModule.provideFoo(DuplicateMapKeyErrorTest.java:104)
      \_ installed by: DuplicateMapKeyErrorTest$ClassKeyMapBinderModule -> RealMapBinder

1 error

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Full classname legend:
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DuplicateMapKeyErrorTest$ClassKeyMapBinderModule: "com.google.inject.errors.DuplicateMapKeyErrorTest$ClassKeyMapBinderModule"
RealMapBinder:                                    "com.google.inject.internal.RealMapBinder"
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End of classname legend:
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