code: protected EnumerationValue[] getEnumConstants(final InputColumn<?> inputColumn,
              final ConfiguredPropertyDescriptor mappedEnumsProperty) {
          if (mappedEnumsProperty instanceof EnumerationProvider) {
              return ((EnumerationProvider) mappedEnumsProperty).values();
          } else {
              return EnumerationValue.fromArray(mappedEnumsProperty.getBaseType().getEnumConstants());
          }
      }
docs: Produces a list of available enum values for a particular input column.
  
  @param inputColumn
  @param mappedEnumsProperty
  @return