pEpDBusAdapter/pep-introspect.xml

<?xml version="1.0" ?>
<node>
  <interface name="security.pep">
    <method name="decrypt_message">
      <arg direction="out" name="status" type="i" />
      <arg direction="out" name="dst" type="s" />
      <arg direction="in" name="src" type="s" />
      <arg direction="out" name="keylist" type="as" />
      <arg direction="out" name="flags" type="i"/>
    </method>
  </interface>
</node>