web/vendor/sebastian/resource-operations/build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="resource-operations" default="build">
 <target name="build" depends="generate" />

 <target name="generate" depends="download-arginfo">
  <exec executable="${basedir}/build/generate.php" taskname="generate" />
 </target>

 <target name="download-arginfo">
  <tstamp>
   <format property="thirty.days.ago" pattern="MM/dd/yyyy hh:mm aa" offset="-30" unit="day"/>
  </tstamp>

  <delete>
   <fileset dir="${basedir}/build">
    <include name="arginfo.php" />
    <date datetime="${thirty.days.ago}" when="before"/>
   </fileset>
  </delete>

  <get src="https://raw.githubusercontent.com/rlerdorf/phan/master/includes/arginfo.php" dest="${basedir}/build/arginfo.php" skipexisting="true"/>
 </target>
</project>