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[Yaml] Allow to get all the enum cases

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Original file line number	Diff line number	Diff line change
@@ -355,6 +355,26 @@ and the special ``!php/enum`` syntax to parse them as proper PHP enums::
`355`	`355`	// the value of the 'foo' key is a string because it missed the `!php/enum` syntax
`356`	`356`	`// $parameters = ['foo' => 'FooEnum::Foo', 'bar' => 'foo'];`
`357`	`357`
	`358`	+You can also use ``!php/enum`` to get all the enumeration cases by only
	`359`	`+giving the enumeration FQCN::`
	`360`	`+`
	`361`	`+ enum FooEnum: string`
	`362`	`+ {`
	`363`	`+ case Foo = 'foo';`
	`364`	`+ case Bar = 'bar';`
	`365`	`+ }`
	`366`	`+`
	`367`	`+ // ...`
	`368`	`+`
	`369`	`+ $yaml = '{ bar: !php/enum FooEnum }';`
	`370`	`+ $parameters = Yaml::parse($yaml, Yaml::PARSE_CONSTANT);`
	`371`	`+ // $parameters = ['bar' => ['foo', 'bar']];`
	`372`	`+`
	`373`	`+..versionadded::7.1`
	`374`	`+`
	`375`	`+ The support for using the enum FQCN without specifying a case`
	`376`	`+ was introduced in Symfony 7.1.`
	`377`	`+`
`358`	`378`	`Parsing and Dumping of Binary Data`
`359`	`379`	`~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`
`360`	`380`

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Original file line number	Diff line number	Diff line change
`@@ -346,6 +346,19 @@ official YAML specification but are useful in Symfony applications:`
`346`	`346`	`# ... or you can also use "->value" to directly use the value of a BackedEnum case`
`347`	`347`	`operator_type:!php/enum App\Operator\Enum\Type::Or->value`
`348`	`348`
	`349`	`+ This tag allows to omit the enum case and only provide the enum FQCN`
	`350`	`+ to return an array of all available enum cases:`
	`351`	`+`
	`352`	`+ ..code-block::yaml`
	`353`	`+`
	`354`	`+data:`
	`355`	`+operator_types:!php/enum App\Operator\Enum\Type`
	`356`	`+`
	`357`	`+ ..versionadded::7.1`
	`358`	`+`
	`359`	`+ The support for using the enum FQCN without specifying a case`
	`360`	`+ was introduced in Symfony 7.1.`
	`361`	`+`
`349`	`362`	`Unsupported YAML Features`
`350`	`363`	`~~~~~~~~~~~~~~~~~~~~~~~~~`
`351`	`364`

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