gentoo-overlay/app-admin/logstash-bin/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="person">
    <email>patrick@gentoo.org</email>
    <name>Patrick Lauer</name>
  </maintainer>
  <maintainer type="person">
    <email>hydrapolic@gmail.com</email>
    <name>Tomáš Mózes</name>
  </maintainer>
  <maintainer type="person">
    <email>erkiferenc@gmail.com</email>
    <name>Ferenc Erki</name>
  </maintainer>
  <use>
    <flag name="all-plugins">contains the standard distribution package plus all plugins</flag>
  </use>
  <upstream>
    <remote-id type="github">elastic/logstash</remote-id>
  </upstream>
</pkgmetadata>