If you have a big application, you might end up accumulating **several tags**, and you would want to make sure you always use the **same tag** for related *path operations*.

In these cases, it could make sense to store the tags in an `Enum`.

**FastAPI** supports that the same way as with plain strings:

{* ../../docs_src/path_operation_configuration/tutorial002b.py hl[1,8:10,13,18] *}

        return new IllegalArgumentException(
            "Multiple entries with same key: " + key + "=" + value1 + " and " + key + "=" + value2);
      }
    }
  }

  /**
   * Returns an immutable map containing the same entries as {@code map}. The returned map iterates
   * over entries in the same order as the {@code entrySet} of the original map. If {@code map}

        StopwordsItem item2 = new StopwordsItem(1, "test");
        StopwordsItem item3 = new StopwordsItem(2, "test");
        StopwordsItem item4 = new StopwordsItem(1, "different");

        // Same input should have same hashCode regardless of id
        assertEquals(item1.hashCode(), item2.hashCode());
        assertEquals(item1.hashCode(), item3.hashCode());

        // Different input should have different hashCode

You can easily use the same Pydantic settings to configure your generated OpenAPI and the docs UIs.

For example:

{* ../../docs_src/conditional_openapi/tutorial001.py hl[6,11] *}

Here we declare the setting `openapi_url` with the same default of `"/openapi.json"`.

And then we use it when creating the `FastAPI` app.

### Multiple Applications { #multiple-applications }

In the same server (or servers), there could be **multiple applications**, for example, other API programs or a database.

Only one process can be handling the specific IP and port (the TLS Termination Proxy in our example) but the other applications/processes can be running on the server(s) too, as long as they don't try to use the same **combination of public IP and port**.

        INTERFACES.put("lsarpc", lsarpc.getSyntax());
        INTERFACES.put("samr", samr.getSyntax());
        INTERFACES.put("netdfs", netdfs.getSyntax());
        INTERFACES.put("netlogon", "12345678-1234-abcd-ef00-01234567cffb:1.0");
        INTERFACES.put("wkssvc", "6BFFD098-A112-3610-9833-46C3F87E345A:1.0");
        INTERFACES.put("samr", "12345778-1234-ABCD-EF00-0123456789AC:1.0");
    }

    /**

  }

  /**
   * Returns an immutable bimap containing the given entries. The returned bimap iterates over
   * entries in the same order as the original iterable.
   *
   * @throws IllegalArgumentException if two keys have the same value or two values have the same
   *     key
   * @throws NullPointerException if any key, value, or entry is null
   * @since 19.0
   */

    // enclosed with same start
    assertEquals(range, range.span(Range.closed(4, 6)));

    // enclosed, interior
    assertEquals(range, range.span(Range.closed(5, 7)));

    // enclosed with same end
    assertEquals(range, range.span(Range.closed(6, 8)));

    // equal
    assertEquals(range, range.span(range));

    // enclosing with same start

        assertEquals(0L, info.length());
    }

    @Test
    @DisplayName("Test equals method with same netName")
    void testEqualsWithSameNetName() {
        SmbShareInfo info1 = new SmbShareInfo("Share1", 0, "Remark1");
        SmbShareInfo info2 = new SmbShareInfo("Share1", 1, "Remark2");

        // Same netName, different type and remark
        assertTrue(info1.equals(info2));
        assertTrue(info2.equals(info1));

        SmbTreeHandleImpl t2 = h.getTree();

        assertSame(tree, t1, "Expected same mocked tree");
        assertSame(tree, t2, "Expected same mocked tree");

        // acquire is called once in ctor + once per getTree() call
        verify(tree, times(3)).acquire();
    }

    @Test
    @DisplayName("isValid() true when open, same tree id, connected")
    void isValid_true_whenOpenSameTreeConnected() {