Missing documentation

[grempa]

In Readme.rst is written:

Extending the client
It is possible to extend the client and provide additional data which can be displayed later in the master installation.

But i miss a chapter "How" this is done. Or a link to an extension which does that, at least.
Would be great to have this.

[hoermannklaus]

@grempa You can implement an additional Provider and configure it in the TYPO3_CONF_VARS of your custom extension in the ext_localconf.php like this:

$GLOBALS['TYPO3_CONF_VARS']['EXT']['t3monitoring_client']['provider'][] = MyProvider::class;

For the MyProvider you can create a new Provider Class:

namespace MyExtension\Provider;

use T3Monitor\T3monitoringClient\Provider\DataProviderInterface;

class MyProvider implements DataProviderInterface
{
    // Implement necessary "get" interface method
{

See also here for a provider in the t3monitoring_client extension: ExtensionProvider

Now the JSON from the client is enriched with the data returned in the "get" method.

I hope this was accurate enough, but I think you get the idea and manage to workout the "details".