<commit_before>#ifndef KERNEL_H
#define KERNEL_H

class Kernel {
public:
    static Kernel& instance()
    {
        static Kernel object;
        return object;
    }

    Kernel(const Kernel& other) = delete;
    Kernel& operator=(Kernel other) = delete;

private:<commit_msg>Code style change.<commit_after>#ifndef KERNEL_H
#define KERNEL_H

class Kernel {
public:
    static Kernel& instance() {
        static Kernel object;
        return object;
    }

    Kernel(const Kernel& other) = delete;
    Kernel& operator=(Kernel other) = delete;

private:
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