Bounding box in the requested CRS. Tuple is the canonical
[minx, miny, maxx, maxy] shape; the adapter swaps axis order when
the CRS is EPSG:4326 (lat,lon) per WMS 1.3 §6.7.3.2.
OptionalbgcolorBackground colour as 0xRRGGBB or #RRGGBB.
OptionalcrsCRS code. Defaults to EPSG:3857.
OptionalelevationWMS ELEVATION dimension override.
OptionalextraVendor extras forwarded verbatim on the wire.
OptionalformatImage MIME type. Defaults to image/png.
Layer names. Multiple layers are serialized as a comma-separated LAYERS= value.
OptionalsignalOptionalstylesStyle names. When present the array length must match layers. An
empty array (or a missing entry) selects the layer's default style.
OptionaltimeWMS TIME dimension override; falls back to the layer default.
OptionaltransparentWhether the rendered image should be transparent. Defaults to true.
WMS 1.3 GetMap request envelope.