used to refer to function arguments.
The compilers maintain a virtual frame pointer and refer to the arguments on the stack as offsets from that pseudo-register.
Thus <code>0(FP)</code> is the first argument to the function,
<code>8(FP)</code> is the second (on a 64-bit machine), and so on.
However, when referring to a function argument this way, it is necessary to place a name

from unicorn import UnicornMiddleware

app = FastAPI()

app.add_middleware(UnicornMiddleware, some_config="rainbow")
```

`app.add_middleware()` empfängt eine Middleware-Klasse als erstes Argument und dann alle weiteren Argumente, die an die Middleware übergeben werden sollen.

## Integrierte Middleware

**FastAPI** enthält mehrere Middlewares für gängige Anwendungsfälle. Wir werden als Nächstes sehen, wie man sie verwendet.

  parser.add_argument('build_log',
                      help='Path to a build log.')
  parser.add_argument('--xml-out-path',
                      required=False,
                      help='Path to which to output '
                           'the JUnit-based XML with ResultStore links.')
  parser.add_argument('--print',
                      action='store_true', dest='print', default=False,

     * .
     */
    @Test
    public void testLoadPropertiesInputStreamPropsNull() {
        exception.expect(NullArgumentException.class);
        exception.expectMessage(is("[ECL0008]argument[props] is null."));
        final InputStream inputStream = ResourceUtil.getResourceAsStream("org/codelibs/core/io/test.properties");
        PropertiesUtil.load(null, inputStream);
    }

    /**
     * Test method for

        final NullArgumentException nullArgumentException = new NullArgumentException("hoge");
        assertThat(nullArgumentException.getArgName(), is("hoge"));
        assertThat(nullArgumentException.getMessage(), is("[ECL0008]argument[hoge] is null."));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testErrorMessage_en() throws Exception {
        // ## Arrange ##
        Locale.setDefault(Locale.ENGLISH);

	aggFnMax   FuncName = "MAX"
	aggFnMin   FuncName = "MIN"
	aggFnSum   FuncName = "SUM"
)

var (
	errNonNumericArg = func(fnStr FuncName) error {
		return fmt.Errorf("%s() requires a numeric argument", fnStr)
	}
	errInvalidAggregation = errors.New("Invalid aggregation seen")
)

type aggVal struct {
	runningSum             *Value
	runningCount           int64
	runningMax, runningMin *Value

		if len(e.SFunc.ArgsList) == 0 {
			return qProp{err: fmt.Errorf("%s needs at least one argument", string(funcName))}
		}
		for _, arg := range e.SFunc.ArgsList {
			result.combine(arg.analyze(s))
		}
		return result

	case sqlFnNullIf:
		if len(e.SFunc.ArgsList) != 2 {
			return qProp{err: fmt.Errorf("%s needs exactly 2 arguments", string(funcName))}
		}
		for _, arg := range e.SFunc.ArgsList {

          fileSystem.source(this@asRequestBody).use { source -> sink.writeAll(source) }
        }
      }
    }

    @JvmStatic
    @Deprecated(
      message = "Moved to extension function. Put the 'content' argument first to fix Java",
      replaceWith =
        ReplaceWith(
          expression = "content.toRequestBody(contentType)",
          imports = ["okhttp3.RequestBody.Companion.toRequestBody"],
        ),

        opr1.evaluate(function)?.let {
            return it.adjustType(functionCall.resolvedType)
        }

        val argument = functionCall.arguments.firstOrNull() ?: return null
        val opr2 = evaluate(argument, mode) ?: return null
        opr1.evaluate(function, opr2)?.let {
            return it.adjustType(functionCall.resolvedType)
        }
        return null
    }

     * This type can appear in the return value of a call to
     * {@link Session#resolveDependencies resolveDependencies(...)} when at least one dependency
     * cannot be associated to any type specified in the {@code desiredTypes} argument.
     * Plugins can choose to report a warning to users when unresolved paths exist.
     */
    PathType UNRESOLVED = new PathType() {
        @Override
        public String name() {
            return "UNRESOLVED";