https://arrow.apache.org/java/current/reference/org.apache.arrow.vector/org/apache/arrow/vector/complex/reader/Decimal256Reader.html
Decimal256Reader (Apache Arrow Java Root POM 19.0.0 API)
declaration: module: org.apache.arrow.vector, package: org.apache.arrow.vector.complex.reader, interface: Decimal256Reader
apache arrowjavarootpomapi