## Parameterize the instance

And now, we can use `__init__` to declare the parameters of the instance that we can use to "parameterize" the dependency:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[9] *}

In this case, **FastAPI** won't ever touch or care about `__init__`, we will use it directly in our code.

## Create an instance

We could create an instance of this class with:

) -> Dependant:
    security_requirement = None
    security_scopes = security_scopes or []
    if isinstance(depends, params.Security):
        dependency_scopes = depends.scopes
        security_scopes.extend(dependency_scopes)
    if isinstance(dependency, SecurityBase):
        use_scopes: List[str] = []
        if isinstance(dependency, (OAuth2, OpenIdConnect)):
            use_scopes = security_scopes

r=le({},p,l[n])}return e}},offset:{order:200,enabled:!0,fn:J,offset:0},preventOverflow:{order:300,enabled:!0,fn:function(e,t){var o=t.boundariesElement||p(e.instance.popper);e.instance.reference===o&&(o=p(o));var n=B('transform'),i=e.instance.popper.style,r=i.top,s=i.left,d=i[n];i.top='',i.left='',i[n]='';var a=v(e.instance.popper,e.instance.reference,t.padding,o,e.positionFixed);i.top=r,i.left=s,i[n]=d,t.boundaries=a;var l=t.priority,f=e.offsets.popper,m={primary:function(e){var o=f[e];return f...

  }

  Optional() {}

  /**
   * Returns {@code true} if this holder contains a (non-null) instance.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> no differences.
   */
  public abstract boolean isPresent();

  /**
   * Returns the contained instance, which must be present. If the instance might be absent, use
   * {@link #or(Object)} or {@link #orNull} instead.
   *

	<component name="crawler" class="org.codelibs.fess.crawler.Crawler" instance="prototype" >
	</component>

	<!-- Crawler Thread -->
	<component name="crawlerThread" class="org.codelibs.fess.crawler.CrawlerThread" instance="prototype" >
	</component>

	<!-- Entity -->
	<component name="accessResult"
		class="org.codelibs.fess.crawler.entity.OpenSearchAccessResult" instance="prototype">
	</component>
	<component name="urlQueue"

    try {
      assertFalse(getMap().entrySet().contains(mapEntry(IncomparableType.INSTANCE, v0())));
    } catch (ClassCastException acceptable) {
      // allowed by the spec
    }
  }

  public void testContainsEntryWithIncomparableValue() {
    try {
      assertFalse(getMap().entrySet().contains(mapEntry(k0(), IncomparableType.INSTANCE)));
    } catch (ClassCastException acceptable) {
      // allowed by the spec
    }

    try {
      assertFalse(getMap().entrySet().contains(mapEntry(IncomparableType.INSTANCE, v0())));
    } catch (ClassCastException acceptable) {
      // allowed by the spec
    }
  }

  public void testContainsEntryWithIncomparableValue() {
    try {
      assertFalse(getMap().entrySet().contains(mapEntry(k0(), IncomparableType.INSTANCE)));
    } catch (ClassCastException acceptable) {
      // allowed by the spec
    }

        () -> {
          Iterator<E> iterator = collection.iterator();
          assertTrue(collection.add(e3()));
          iterator.next();
        });
  }

  /**
   * Returns the {@link Method} instance for {@link #testAdd_nullSupported()} so that tests of
   * {@link java.util.Collections#checkedCollection(java.util.Collection, Class)} can suppress it
   * with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a

        () -> {
          Iterator<E> iterator = collection.iterator();
          assertTrue(collection.add(e3()));
          iterator.next();
        });
  }

  /**
   * Returns the {@link Method} instance for {@link #testAdd_nullSupported()} so that tests of
   * {@link java.util.Collections#checkedCollection(java.util.Collection, Class)} can suppress it
   * with {@code FeatureSpecificTestSuiteBuilder.suppressing()} until <a

 * JUnit constructs the instances.
 *
 * <p>This class is emulated in GWT.
 *
 * @param <G> the type of the test generator required by this tester. An instance of G should
 *     somehow provide an instance of the class under test, plus any other information required to
 *     parameterize the test.
 * @author George van den Driessche
 */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault