Mapping/PropertyDefinition.php
private function isAccessible(\ReflectionClass $class, $methodName, $parameters)
    {
        if ($class->hasMethod($methodName)) {
            $method = $class->getMethod($methodName);

            if ($method->isPublic() && $method->getNumberOfRequiredParameters() === $parameters) {
                return true;
            }
        }

        return false;
    }
private function isAccessible(\ReflectionClass $class, $methodName, $parameters)
    {
        if ($class->hasMethod($methodName)) {
            $method = $class->getMethod($methodName);

            if ($method->isPublic() && $method->getNumberOfRequiredParameters() === $parameters) {
                return true;
            }
        }

        return false;
    }
Returns whether a method is public and has a specific number of required parameters.

Copied from {@link Symfony\Component\PropertyAccess\PropertyAccessor}.

@param  \ReflectionClass $class      The class of the method
@param  string           $methodName The method name
@param  integer          $parameters The number of parameters

@return Boolean Whether the method is public and has $parameters
required parameters