gLzmaCustomDecompressGuid

GUID indicates the LZMA custom compress/decompress algorithm.
Include/Guid/LzmaDecompress.h

GUID Information

GUID's Guid Name	GUID's Guid
gLzmaCustomDecompressGuid	{ 0xEE4E5898, 0x3914, 0x4259, { 0x9D, 0x6E, 0xDC, 0x7B, 0xD7, 0x94, 0x03, 0xCF }}

Refer to Header File

MdeModulePkg/Include/Guid/LzmaDecompress.h