minor #14800 [Ldap] Add examples about get/has attribute (javiereguiluz)

This PR was merged into the 4.4 branch.

Discussion
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[Ldap] Add examples about get/has attribute

I want to document #14625 but first we need to add some examples of the methods that changed their behavior.

Commits
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ff28617 [Ldap] Add examples about get/has attribute

Author: OskarStark

components/ldap.rst

@@ -139,6 +139,10 @@ delete existing ones::
     $query = $ldap->query('dc=symfony,dc=com', '(&(objectclass=person)(ou=Maintainers))');
     $result = $query->execute();
     $entry = $result[0];
+
+    $phoneNumber = $entry->getAttribute('phoneNumber');
+    $isContractor = $entry->hasAttribute('contractorCompany');
+
     $entry->setAttribute('email', ['[email protected]']);
     $entryManager->update($entry);