OGS
pointheatsource_quadratic-mesh.xml
<OpenGeoSysProjectDiff base_file="../pointheatsource_quadratic-mesh.prj">
  <replace sel="//source_term/type/text()">Python</replace>
  <add sel="//source_term">
    <source_term_object>source_term</source_term_object>
  </add>
  <add sel="./">
    <python_script>source_term.py</python_script>
  </add>
  <remove sel=".//meshes/mesh[text()='quarter_circle_geometry_center.vtu']/@axially_symmetric" />
</OpenGeoSysProjectDiff>