src/main/java/org/fest/assertions/api/AbstractObjectAssert.java
public S isNotSameAs(A other) {
    objects.assertNotSame(description, actual, other);
    return myself;
  }
public S isNotSameAs(A other) {
    objects.assertNotSame(description, actual, other);
    return myself;
  }
Verifies that the <em>actual</em> value is not the same as the given one.

@param other the given value to compare the <em>actual</em> value to.
@return {@code this} assertion object.
@throws AssertionError if the <em>actual</em> value is the same as the given one.