Kerb5Authenticator cloned = auth.clone();

        assertNotSame(auth, cloned);
        assertEquals(subj, cloned.getSubject());
        assertEquals("alice", cloned.getUser());
        assertEquals("EXAMPLE.COM", cloned.getRealm());
        assertEquals("cifs", cloned.getService());
        assertEquals(123, cloned.getUserLifeTime());
        assertEquals(456, cloned.getLifeTime());

     */
    protected static void cloneInternal(NtlmPasswordAuthenticator cloned, NtlmPasswordAuthenticator toClone) {
        cloned.domain = toClone.domain;
        cloned.username = toClone.username;
        cloned.password = toClone.password != null ? toClone.password.clone() : null;
        cloned.type = toClone.type;
    }

    /**
     * Returns the domain.
     */
    @Override
    public String getUserDomain() {

        assertEquals(original.getUsername(), cloned.getUsername());
        assertEquals(original.getPassword(), cloned.getPassword());

        // Verify password arrays are independent
        original.secureWipePassword();
        assertNull(original.getPassword());
        assertEquals("ClonePass123!", cloned.getPassword());
    }

    /**
     * Test authentication type guessing with secure password

            orig.refresh();
            // Clone should retain its cached Subject
            assertSame(copySubj, copy.getSubject(), "Clone should retain its cached Subject");
        } else {
            // If JAAS is not configured and getSubject() returns null, verify cloning still works
            assertNull(first, "First call to getSubject() returned null - JAAS not configured");

            when(mockMd5.clone()).thenReturn(clonedMd5);

            HMACT64 clonedHmac = (HMACT64) originalHmac.clone();

            assertNotNull(clonedHmac);
            assertNotSame(originalHmac, clonedHmac);
            verify(mockMd5, times(1)).clone(); // Verify that the internal MD5 was cloned
        }
    }

    @Test
    void testCloneNotSupportedException() throws NoSuchAlgorithmException, CloneNotSupportedException {

# Development - Contributing

First, you might want to see the basic ways to [help FastAPI and get help](help-fastapi.md){.internal-link target=_blank}.

## Developing

If you already cloned the <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">fastapi repository</a> and you want to deep dive in the code, here are some guidelines to set up your environment.

### Virtual environment

	}

	var resultClone Product2
	if err := DB.First(&resultClone, "name = ?", "Nice_clone").Error; err != nil {
		t.Fatalf("Failed to find cloned product, got error: %v", err)
	}

	result.Price *= 2
	result.Name += "_clone"
	AssertObjEqual(t, result, resultClone, "Price", "Name")

	DB.Model(&result).Update("Price", 500)
	var result2 Product2
	DB.First(&result2, "name = ?", "Nice")

This is because we want to include their *path operations* in the OpenAPI schema and the user interfaces.

As we cannot just isolate them and "mount" them independently of the rest, the *path operations* are "cloned" (re-created), not included directly.

///

## Check the automatic API docs { #check-the-automatic-api-docs }

Now, run your app:

<div class="termy">

```console
$ fastapi dev app/main.py

          case 0:
            return first;
          case 1:
            return second;
          default:
            return rest[index - 2];
        }
      }
    };
  }

  // cloned from ImmutableCollection
  private static int expandedCapacity(int oldCapacity, int minCapacity) {
    if (minCapacity < 0) {
      throw new IllegalArgumentException("cannot store more than Integer.MAX_VALUE elements");

        }

        if (updateScope) {
            fireEvent(ResolutionListener.UPDATE_SCOPE, listeners, nearest, farthestArtifact);

            // previously we cloned the artifact, but it is more efficient to just update the artifactScope
            // if problems are later discovered that the original object needs its original artifactScope value,
            // cloning may