mirror of https://github.com/rectorphp/rector.git
200 lines
6.5 KiB
PHP
200 lines
6.5 KiB
PHP
<?php
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declare (strict_types=1);
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namespace Rector\Php70\Rector\StaticCall;
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use PhpParser\Node;
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use PhpParser\Node\Expr;
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use PhpParser\Node\Expr\MethodCall;
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use PhpParser\Node\Expr\New_;
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use PhpParser\Node\Expr\PropertyFetch;
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use PhpParser\Node\Expr\StaticCall;
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use PHPStan\Analyser\Scope;
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use PHPStan\Reflection\ClassReflection;
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use PHPStan\Reflection\MethodReflection;
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use PHPStan\Reflection\ReflectionProvider;
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use PHPStan\Type\ObjectType;
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use Rector\CodingStyle\ValueObject\ObjectMagicMethods;
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use Rector\Enum\ObjectReference;
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use Rector\NodeCollector\ScopeResolver\ParentClassScopeResolver;
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use Rector\NodeCollector\StaticAnalyzer;
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use Rector\Rector\AbstractScopeAwareRector;
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use Rector\Reflection\ReflectionResolver;
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use Rector\ValueObject\PhpVersionFeature;
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use Rector\VersionBonding\Contract\MinPhpVersionInterface;
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use ReflectionMethod;
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use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
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use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
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/**
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* @changelog https://thephp.cc/news/2017/07/dont-call-instance-methods-statically https://3v4l.org/tQ32f https://3v4l.org/jB9jn
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*
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* @see \Rector\Tests\Php70\Rector\StaticCall\StaticCallOnNonStaticToInstanceCallRector\StaticCallOnNonStaticToInstanceCallRectorTest
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*/
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final class StaticCallOnNonStaticToInstanceCallRector extends AbstractScopeAwareRector implements MinPhpVersionInterface
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{
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/**
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* @readonly
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* @var \Rector\NodeCollector\StaticAnalyzer
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*/
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private $staticAnalyzer;
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/**
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* @readonly
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* @var \PHPStan\Reflection\ReflectionProvider
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*/
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private $reflectionProvider;
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/**
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* @readonly
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* @var \Rector\Reflection\ReflectionResolver
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*/
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private $reflectionResolver;
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/**
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* @readonly
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* @var \Rector\NodeCollector\ScopeResolver\ParentClassScopeResolver
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*/
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private $parentClassScopeResolver;
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public function __construct(StaticAnalyzer $staticAnalyzer, ReflectionProvider $reflectionProvider, ReflectionResolver $reflectionResolver, ParentClassScopeResolver $parentClassScopeResolver)
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{
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$this->staticAnalyzer = $staticAnalyzer;
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$this->reflectionProvider = $reflectionProvider;
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$this->reflectionResolver = $reflectionResolver;
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$this->parentClassScopeResolver = $parentClassScopeResolver;
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}
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public function provideMinPhpVersion() : int
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{
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return PhpVersionFeature::INSTANCE_CALL;
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}
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public function getRuleDefinition() : RuleDefinition
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{
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return new RuleDefinition('Changes static call to instance call, where not useful', [new CodeSample(<<<'CODE_SAMPLE'
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class Something
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{
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public function doWork()
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{
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}
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}
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class Another
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{
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public function run()
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{
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return Something::doWork();
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}
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}
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CODE_SAMPLE
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, <<<'CODE_SAMPLE'
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class Something
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{
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public function doWork()
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{
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}
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}
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class Another
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{
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public function run()
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{
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return (new Something)->doWork();
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}
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}
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CODE_SAMPLE
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)]);
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}
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/**
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* @return array<class-string<Node>>
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*/
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public function getNodeTypes() : array
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{
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return [StaticCall::class];
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}
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/**
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* @param StaticCall $node
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*/
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public function refactorWithScope(Node $node, Scope $scope) : ?Node
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{
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if ($node->name instanceof Expr) {
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return null;
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}
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$methodName = $this->getName($node->name);
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$className = $this->resolveStaticCallClassName($node);
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if ($methodName === null) {
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return null;
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}
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if ($className === null) {
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return null;
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}
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if ($this->shouldSkip($methodName, $className, $node, $scope)) {
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return null;
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}
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if ($this->isInstantiable($className, $scope)) {
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$new = new New_($node->class);
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return new MethodCall($new, $node->name, $node->args);
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}
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return null;
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}
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private function resolveStaticCallClassName(StaticCall $staticCall) : ?string
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{
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if ($staticCall->class instanceof PropertyFetch) {
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$objectType = $this->getType($staticCall->class);
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if ($objectType instanceof ObjectType) {
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return $objectType->getClassName();
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}
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}
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return $this->getName($staticCall->class);
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}
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private function shouldSkip(string $methodName, string $className, StaticCall $staticCall, Scope $scope) : bool
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{
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if (\in_array($methodName, ObjectMagicMethods::METHOD_NAMES, \true)) {
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return \true;
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}
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if (!$this->reflectionProvider->hasClass($className)) {
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return \true;
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}
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$classReflection = $this->reflectionProvider->getClass($className);
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if ($classReflection->isAbstract()) {
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return \true;
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}
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// does the method even exist?
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if (!$classReflection->hasMethod($methodName)) {
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return \true;
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}
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$isStaticMethod = $this->staticAnalyzer->isStaticMethod($classReflection, $methodName);
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if ($isStaticMethod) {
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return \true;
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}
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$reflection = $scope->getClassReflection();
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if ($reflection instanceof ClassReflection && $reflection->isSubclassOf($className)) {
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return \true;
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}
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$className = $this->getName($staticCall->class);
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if (\in_array($className, [ObjectReference::PARENT, ObjectReference::SELF, ObjectReference::STATIC], \true)) {
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return \true;
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}
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if ($className === 'class') {
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return \true;
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}
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$parentClassName = $this->parentClassScopeResolver->resolveParentClassName($scope);
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return $className === $parentClassName;
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}
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private function isInstantiable(string $className, Scope $scope) : bool
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{
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if (!$this->reflectionProvider->hasClass($className)) {
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return \false;
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}
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$methodReflection = $this->reflectionResolver->resolveMethodReflection($className, '__callStatic', $scope);
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if ($methodReflection instanceof MethodReflection) {
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return \false;
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}
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$classReflection = $this->reflectionProvider->getClass($className);
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$nativeReflection = $classReflection->getNativeReflection();
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$reflectionMethod = $nativeReflection->getConstructor();
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if (!$reflectionMethod instanceof ReflectionMethod) {
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return \true;
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}
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if (!$reflectionMethod->isPublic()) {
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return \false;
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}
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// required parameters in constructor, nothing we can do
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return !(bool) $reflectionMethod->getNumberOfRequiredParameters();
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}
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}
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