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Feb 20th, 2019
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  1. 1. Map<Date, List<X>>
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  3. 2. Map<Date, List<Y>>
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  5. A. private <T> List<Date> myMethod(Map<Date, List<T>> map)
  6. B. private List<Date> myMethod(Map<Date, List<?>> map)
  7.  
  8. <T> boolean addAll(Collection<T> c)
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