### Question:
Column implements Cloneable { public void setValue(Object value) { this.value = Optional.ofNullable(value); } Column(int index, String name, Object value);  Column(int index, String name, String targetSink, Object value);  Column(int index, String name); void convertToInteger(); void convertToDouble(); void convertDMSToDouble(); void convertToBoolean(); void fillWithValue(String value); void convertToString(); boolean isNullValue(); String getName(); Object getValue(); Optional<Object> getValueAsOptional(); int getIndex(); void setIndex(int index); String getTargetSink(); String getTargetObject(); void setName(String name); void setTargetSink(String targetSink); void setTargetObject(String targetObject); void setValue(Object value); @Override int hashCode(); @Override boolean equals(Object obj); @Override Column clone(); @Override String toString();  }### Answer:
@Test public void testSetValue() { Column stringColumn = new Column(0, "string"); String expectedString = "testOfSettingAString"; stringColumn.setValue(expectedString); assertEquals(expectedString, stringColumn.getValue()); Integer expectedInt = 42; Column integerColumn = new Column(0, "number"); integerColumn.setValue(expectedInt); assertEquals(expectedInt, integerColumn.getValue()); Column nullColumn = new Column(0, "number"); nullColumn.setValue(null); assertNull(nullColumn.getValue()); }