Line-Polygon Intersection
shapes_lines
QgsProcessingParameterFeatureSource|LINES|Lines|1|None|False
QgsProcessingParameterFeatureSource|POLYGONS|Polygons|2|None|False
QgsProcessingParameterEnum|METHOD|Output|[0] one multi-line per polygon;[1] keep original line attributes
QgsProcessingParameterVectorDestination|INTERSECT|Intersection