customParameters

Custom parameters that are appended to GetCapabilities, GetMap, and GetFeatureInfo WMS requests. When making a WMS request, only parameters required by the service are included by default. Setting custom parameters will allow you to specify any additional parameters, such as API keys or user credentials, to the service. These parameters will be appended to GetCapabilities, GetMap, and GetFeatureInfo requests. Parameters intended for GetCapabilities requests should be set before the service is loaded.

If a parameter with the same name is defined in a layer's custom parameters, then the layer-specific values take precedence over service-wide values.