code: @Deprecated
      public Collection<Double> getAllKeywordValues(String keyword, SampleType type) {
          if (!isLimited(keyword, type)) {
              return null;
          }
          Collection<Double> samples = getSamples(keyword, type);
          return samples == null ? null : Collections.unmodifiableCollection(samples);
      }
docs: Returns all the values that trigger this keyword, or null if the number of such
  values is unlimited.
  
  @param keyword the keyword
  @param type the type of samples requested, INTEGER or DECIMAL
  @return the values that trigger this keyword, or null.  The returned collection
  is immutable. It will be empty if the keyword is not defined.
  
  @deprecated This API is ICU internal only.
  @hide original deprecated declaration
  @hide draft / provisional / internal are hidden on Android