### Question:
MultipleInstanceActivityPropertyWriter extends ActivityPropertyWriter { public void setIsSequential(boolean sequential) { setUpLoopCharacteristics(); miloop.setIsSequential(sequential); } MultipleInstanceActivityPropertyWriter(Activity activity, VariableScope variableScope, Set<DataObject> dataObjects); void setCollectionInput(String collectionInput); void setCollectionOutput(String collectionOutput); void setInput(String name); void setOutput(String name); void setOutput(String name, boolean addDataOutputAssociation); void setCompletionCondition(String expression); void setIsSequential(boolean sequential);  }### Answer:
@Test public void testSetIsSequentialTrue() { writer.setIsSequential(true); assertTrue(((MultiInstanceLoopCharacteristics) activity.getLoopCharacteristics()).isIsSequential()); }
@Test public void testSetIsSequentialFalse() { writer.setIsSequential(false); assertFalse(((MultiInstanceLoopCharacteristics) activity.getLoopCharacteristics()).isIsSequential()); }