PhpParser\Node\Stmt\ClassMethod::isPublic PHP Method

    public function isPublic() {
        return ($this->flags & Class_::MODIFIER_PUBLIC) !== 0
            || ($this->flags & Class_::VISIBILITY_MODIFER_MASK) === 0;
    }

 private function enterClassMethod(ClassMethod $node)
 {
     $methodName = $node->name;
     if ($this->isGetterOrSetter($methodName) !== true && $this->isNeitherConstructorNorDestructor($methodName)) {
         $this->methods[$methodName] = $node->isPublic();
     }
 }