c/src/main/java/org/apache/arrow/c/StructVectorLoader.java
vector/src/main/java/org/apache/arrow/vector/VectorLoader.java

c/src/main/java/org/apache/arrow/c/StructVectorUnloader.java
vector/src/main/java/org/apache/arrow/vector/VectorUnloader.java

c/src/main/java/org/apache/arrow/c/CDataDictionaryProvider.java
vector/src/main/java/org/apache/arrow/vector/dictionary/DictionaryProvider.java