libstax-ex-java 1.7.8-1 (i386 binary) in ubuntu bionic

 This project develops a few extensions to complement JSR-173 StAX API in the
 following area.
 .
  * Enable parser instance reuse (which is important in the
    high-performance environment like JAXB and JAX-WS)
  * Improve the support for reading from non-text XML infoset,
    such as FastInfoset.
  * Improve the namespace support.