odata2-annotation-processor/annotation-processor-core/src/main/java/org/apache/olingo/odata2/annotation/processor/core/ListsProcessor.java [990:1018]:
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    public WriteEntryCallbackResult retrieveEntryResult(final WriteEntryCallbackContext context)
        throws ODataApplicationException {
      try {
        final EdmEntityType entityType =
            context.getSourceEntitySet().getRelatedEntitySet(context.getNavigationProperty()).getEntityType();
        WriteEntryCallbackResult result = new WriteEntryCallbackResult();
        Object relatedData;
        try {
          relatedData = readRelatedData(context);
        } catch (final ODataNotFoundException e) {
          relatedData = null;
        }

        if (relatedData == null) {
          result.setEntryData(Collections.<String, Object> emptyMap());
        } else {
          result.setEntryData(getStructuralTypeValueMap(relatedData, entityType));

          EntityProviderWriteProperties inlineProperties =
              EntityProviderWriteProperties.serviceRoot(getContext().getPathInfo().getServiceRoot()).callbacks(
                  getCallbacks(relatedData, entityType)).expandSelectTree(context.getCurrentExpandSelectTreeNode())
                  .build();
          result.setInlineProperties(inlineProperties);
        }
        return result;
      } catch (final ODataException e) {
        throw new ODataApplicationException(e.getLocalizedMessage(), Locale.ROOT, e);
      }
    }
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odata2-lib/odata-ref/src/main/java/org/apache/olingo/odata2/ref/processor/ListsProcessor.java [1000:1028]:
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    public WriteEntryCallbackResult retrieveEntryResult(final WriteEntryCallbackContext context)
        throws ODataApplicationException {
      try {
        final EdmEntityType entityType =
            context.getSourceEntitySet().getRelatedEntitySet(context.getNavigationProperty()).getEntityType();
        WriteEntryCallbackResult result = new WriteEntryCallbackResult();
        Object relatedData;
        try {
          relatedData = readRelatedData(context);
        } catch (final ODataNotFoundException e) {
          relatedData = null;
        }

        if (relatedData == null) {
          result.setEntryData(Collections.<String, Object> emptyMap());
        } else {
          result.setEntryData(getStructuralTypeValueMap(relatedData, entityType));

          EntityProviderWriteProperties inlineProperties =
              EntityProviderWriteProperties.serviceRoot(getContext().getPathInfo().getServiceRoot()).callbacks(
                  getCallbacks(relatedData, entityType)).expandSelectTree(context.getCurrentExpandSelectTreeNode())
                  .build();
          result.setInlineProperties(inlineProperties);
        }
        return result;
      } catch (final ODataException e) {
        throw new ODataApplicationException(e.getLocalizedMessage(), Locale.ROOT, e);
      }
    }
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