public function classesByFile($filePath)
    {
        $this->typeCheck->classesByFile(func_get_args());

        return $this->classesBySource(
            $this->isolator->file_get_contents($filePath)
        );
    }
public function classesByFile($filePath)
    {
        $this->typeCheck->classesByFile(func_get_args());

        return $this->classesBySource(
            $this->isolator->file_get_contents($filePath)
        );
    }
@param string $filePath

@return array<ClassDefinition>