```python
from typing import Optional


def say_hi(name: Optional[str]):
    print(f"Hey {name}!")
```

El parámetro `name` está definido como `Optional[str]`, pero **no es opcional**, no puedes llamar a la función sin el parámetro:

```Python
say_hi()  # ¡Oh, no, esto lanza un error! 😱
```

from typing import Optional


def say_hi(name: Optional[str]):
    print(f"Hey {name}!")
```

The parameter `name` is defined as `Optional[str]`, but it is **not optional**, you cannot call the function without the parameter:

```Python
say_hi()  # Oh, no, this throws an error! 😱
```

The `name` parameter is **still required** (not *optional*) because it doesn't have a default value. Still, `name` accepts `None` as the value:

```Python

---
- job:
    name: elastic+elasticsearch+%BRANCH%+periodic+platform-support
    display-name: "elastic / elasticsearch # %BRANCH% - platform support"
    description: "Testing of the Elasticsearch %BRANCH% branch platform support tests.\n"
    project-type: multijob
    node: master
    vault: []
    scm:
      - git:
          wipe-workspace: false
    builders:
      - multijob:
          name: Packaging tests
          projects:

    return suite;
  }

  static TestSuite suiteForBytes(
      ByteSourceFactory factory, byte[] bytes, String name, String desc, boolean slice) {
    TestSuite suite = new TestSuite(name + " [" + desc + "]");
    for (Method method : testMethods) {
      suite.addTest(new ByteSourceTester(factory, bytes, name, desc, method));
    }

    if (slice && bytes.length > 0) {

-->
<super-source path="super"/>

<inherits name="com.google.common.annotations.Annotations" />
<inherits name="com.google.common.base.Base" />
<inherits name="com.google.common.collect.Collect" />
<inherits name="com.google.common.primitives.Primitives" />
<inherits name="com.google.common.testing.Testing" />
<inherits name="com.google.gwt.core.Core" />
<inherits name="com.google.gwt.junit.JUnit" />

		uint32_t attributes;
		uint32_t security_descriptor;
		LsarQosInfo *security_quality_of_service;
	} LsarObjectAttributes;

	typedef struct {
		unicode_string name;
		sid_t *sid;
	} LsarDomainInfo;

	typedef struct {
		unicode_string name;
		unicode_string dns_domain;
		unicode_string dns_forest;
		uuid_t domain_guid;
		sid_t *sid;
	} LsarDnsDomainInfo;

	enum {
		POLICY_INFO_AUDIT_EVENTS   = 2,

        this.version = version;
    }

    /**
     * Gets the share name to monitor.
     *
     * @return the share name
     */
    public String getShareName() {
        return shareName;
    }

    /**
     * Sets the share name to monitor.
     *
     * @param shareName the share name
     */
    public void setShareName(String shareName) {
        this.shareName = shareName;
    }

		uint32_t attributes;
		uint32_t security_descriptor;
		LsarQosInfo *security_quality_of_service;
	} LsarObjectAttributes;

	typedef struct {
		unicode_string name;
		sid_t *sid;
	} LsarDomainInfo;

	typedef struct {
		unicode_string name;
		unicode_string dns_domain;
		unicode_string dns_forest;
		uuid_t domain_guid;
		sid_t *sid;
	} LsarDnsDomainInfo;

	enum {
		POLICY_INFO_AUDIT_EVENTS   = 2,

        org.setUrl("https://maven.localdomain");

        assertEquals("Organization {name=Testing Maven Unit, url=https://maven.localdomain}", org.toString());
    }

    @Test
    public void testToStringNotNonsense10() {
        Organization org = new Organization();
        org.setName("Testing Maven Unit");

        assertEquals("Organization {name=Testing Maven Unit, url=null}", org.toString());
    }

    @Test

      numToKeep: 500
      artifactDaysToKeep: 7
    parameters:
      - string:
          name: branch_specifier
          default: "refs/heads/%BRANCH%"
          description: "the Git branch specifier to build (<branchName>, <tagName>, <commitId>, etc.)\n"
    scm:
      - git:
          name: origin
          # master node jenkins user ~/.ssh
          credentials-id: f6c7695a-671e-4f4f-a331-acdce44ff9ba