def get_baggage_item(self, key):
        return None
Returns a graph with package dependencies.
dataset/ETHPy150Open opentracing/opentracing-python/opentracing/span.py/Span.get_baggage_item--crossover with--dataset/ETHPy150Open VisTrails/VisTrails/vistrails/core/packagemanager.py/PackageManager.dependency_graph