Walk a parsed WmsCapabilities tree and yield every named layer (skipping container layers without a name). Useful for descriptor resolution: callers want to bind a LAYER name without re-walking the parent hierarchy.
WmsCapabilities
name
LAYER
Walk a parsed
WmsCapabilitiestree and yield every named layer (skipping container layers without aname). Useful for descriptor resolution: callers want to bind aLAYERname without re-walking the parent hierarchy.