code: public <T> Collection<T> getBroadcastSet(String name) {
  		return this.runtimeContext.<T>getBroadcastVariable(name);
  	}
docs: Gets the broadcast data set registered under the given name. Broadcast data sets
  are available on all parallel instances of a function. They can be registered via
  {@link VertexCentricIteration#addBroadcastSetForUpdateFunction(String, eu.stratosphere.api.java.DataSet)}.
  
  @param name The name under which the broadcast set is registered.
  @return The broadcast data set.