File tempFile = createTempFile("pomTest");
        FileModelSource instance = new FileModelSource(tempFile);

        assertFalse(instance.equals(null), "Expected " + instance + " to not equal " + null);
        assertFalse(instance.equals(new Object()));
        assertTrue(instance.equals(instance), "Expected " + instance + " to equal " + instance);
        assertTrue(instance.equals(new FileModelSource(tempFile)));
    }

    @Test

But we want to be able to parameterize that fixed content.

## A "callable" instance { #a-callable-instance }

In Python there's a way to make an instance of a class a "callable".

Not the class itself (which is already a callable), but an instance of that class.

To do that, we declare a method `__call__`:

{* ../../docs_src/dependencies/tutorial011_an_py310.py hl[12] *}

        dt_field: safe_datetime

    instance = MyDict(dt_field=safe_datetime.now())

    encoded_instance = jsonable_encoder(
        instance, custom_encoder={safe_datetime: lambda o: o.strftime("%H:%M:%S")}
    )
    assert encoded_instance["dt_field"] == instance["dt_field"].strftime("%H:%M:%S")

    encoded_instance = jsonable_encoder(
        instance, custom_encoder={datetime: lambda o: o.strftime("%H:%M:%S")}

                                instances.add(info);
                            }
                        }
                    }
                }
            }
        } catch (final Exception e) {
            logger.warn("Failed to get active instances.", e);
        }
        return instances;
    }

    /**
     * Checks whether the specified instance is currently active.
     *

     * @return this ExecJob instance for method chaining
     */
    public ExecJob timeout(final int timeout) {
        this.timeout = timeout;
        return this;
    }

    /**
     * Sets whether to use local Fesen instance.
     *
     * @param useLocalFesen true to use local Fesen, false otherwise
     * @return this ExecJob instance for method chaining
     */

	</component>

	<component name="fessFileTransformer" class="org.codelibs.fess.crawler.transformer.FessFileTransformer" instance="singleton">
		<property name="name">"fessFileTransformer"</property>
	</component>

	<component name="fessStandardTransformer" class="org.codelibs.fess.crawler.transformer.FessStandardTransformer" instance="singleton">
		<property name="name">"fessStandardTransformer"</property>
	</component>

    BigInteger offset(BigInteger origin, long distance) {
      checkNonnegative(distance, "distance");
      return origin.add(BigInteger.valueOf(distance));
    }

    @Override
    public long distance(BigInteger start, BigInteger end) {
      return end.subtract(start).max(MIN_LONG).min(MAX_LONG).longValue();
    }

    private Object readResolve() {
      return INSTANCE;
    }

    @Override

		<property name="name">"htmlTransformer"</property>
		<property name="featureMap">defaultFeatureMap</property>
		<property name="propertyMap">defaultPropertyMap</property>
		<property name="childUrlRuleMap">htmlUrlRuleMap</property>
	</component>

	<component name="textTransformer"
		class="org.codelibs.fess.crawler.transformer.impl.TextTransformer" instance="singleton">

    @Test
    public void test_constructor() {
        assertNotNull(target, "Constructor should create instance");
        assertTrue(target instanceof SystemMonitorTarget, "Instance should be of correct type");
        assertTrue(target instanceof MonitorTarget, "Instance should be a MonitorTarget");
        assertTrue(target instanceof TimeoutTarget, "Instance should be a TimeoutTarget");
    }

    @Test

      @ParametricNullness T instance) {
    return new SupplierOfInstance<>(instance);
  }

  private static final class SupplierOfInstance<T extends @Nullable Object>
      implements Supplier<T>, Serializable {
    @ParametricNullness final T instance;

    SupplierOfInstance(@ParametricNullness T instance) {
      this.instance = instance;
    }

    @Override
    @ParametricNullness
    public T get() {