isEmpty property
True if this geometry is considered empty without data or coordinates.
Emptiness is a concept of geospatial data. A geometry object is non-null but without data or coordinates set to meaningful values. In practice try to avoid having empty geometry primitives (like point, linestring, polygon), but if a data source contains them you can use geometries with isEmpty flag set to true for such objects. For series of geometries emptiness means that a series contains zero items.
See also WKT for description of EMPTY geometries.
Implementation
@override
@nonVirtual
bool get isEmpty => false;