CheckXMLContent is a Diagnostic Task that verifies the presence of an element or attribute
(by evaluating an XPath) and optionally test is against a given pattern.
SelfDiagnoseServlet is a server component that can run and report on all registered diagnostic tasks.
Queries:
reload, trigger reloading the configuration [selfdiagnose.xml] found on the classpath.
Request parameters:
html, if true then the report is presented by a HTML table.