customParameters property
These parameters are appended to GetCapabilities, and GetTile. If a parameter with the same name is defined in a layer's custom parameters, then layer-specific values take precedence over service-wide values. Parameters intended for GetCapabilities requests should be set before the service is loaded.
If used with WmtsLayer.customParameters property, duplicate parameters in WmtsService.customParameters will not take precedence.
Implementation
Map<String, String> get customParameters => _customParameters.value;