EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
enum EFI_ACPI_5_0_MULTIPLE_APIC_DESCRIPTION_TABLE_SIGNATURE = SIGNATURE_32('A', 'P', 'I', 'C');

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