### Question:
Line extends AUnboundedLine implements ILine { @Override public ILine copy() { IVector2 supportVector = supportVector(); IVector2 directionVector = directionVector(); return createNewFromVectorCopy(supportVector, directionVector); } private  Line(final IVector2 supportVector, final IVector2 directionVector); static ILine fromPoints(final IVector2 supportPointA, final IVector2 supportPointB); static ILine fromDirection(final IVector2 supportVector, final IVector2 directionVector); @Override ILine copy(); @Override final boolean equals(final Object other); @Override final int hashCode(); @Override Optional<Double> getYIntercept(); @Override Optional<Double> getXValue(final double y); @Override Optional<Double> getYValue(final double x); @Override ILine getOrthogonalLine(); @Override IVector2 closestPointOnLine(final IVector2 point); @Override ILine toLine(); @Override Optional<IVector2> intersectLine(final ILine other); @Override Optional<IVector2> intersectHalfLine(final IHalfLine halfLine); @Override Optional<IVector2> intersectSegment(final ILineSegment segment); @Override String toString();  }### Answer:
@Test public void testCopy() { ILine original = Line.fromDirection(Vector2.fromXY(0, 0), Vector2.fromXY(1, 1)); ILine copy = original.copy(); assertEquals(original.supportVector(), copy.supportVector()); assertFalse(original.supportVector() == copy.supportVector()); assertEquals(original.directionVector(), copy.directionVector()); assertFalse(original.directionVector() == copy.directionVector()); }