```\nfunction \_updateL2L1MessageStatusToClaimed(bytes32 \_messageHash) internal {\n if (inboxL2L1MessageStatus[\_messageHash] != INBOX\_STATUS\_RECEIVED) {\n revert MessageAlreadyClaimed();\n }\n\n delete inboxL2L1MessageStatus[\_messageHash];\n\n emit L2L1MessageClaimed(\_messageHash);\n}\n```\n