https://commons.apache.org/proper/commons-io/apidocs/org/apache/commons/io/input/NullReader.html
NullReader (Apache Commons IO 2.22.0 API)
declaration: package: org.apache.commons.io.input, class: NullReader
apache commonsioapi
https://arrow.apache.org/java/current/reference/org.apache.arrow.vector/org/apache/arrow/vector/complex/impl/NullReader.html
NullReader (Apache Arrow Java Root POM 19.0.0 API)
declaration: module: org.apache.arrow.vector, package: org.apache.arrow.vector.complex.impl, class: NullReader
apache arrowjavarootpomapi