In running post setup apply script from the Gateway server, inside hooks directory. Is there any in-built variable that auto detects the gateway name?

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In running post setup apply script from the Gateway server, inside hooks directory. Is there any variable that we can use for gateway name?

As seen in the documentation, There are no variable that autodetects the gateway name.
List of the available environment variables, under post setup apply

Environment Variable	Information Stored	Example
_COMMENT	A comment typed in by the setup editor in the Gateway Setup Editor when the setup was changed	Added new Managed Entity
_USER	User name of the setup editor	This is the Genos username as described in Authentication
_WORKSTATION	The machine ip address where the Setup was edited	183.23.23.12
_FILES	An XML Document containing the information about the state of all of the setup files	`<setup> <files> <file> <main/> <path>gateway.setup.xml</path> </file> </files> </setup>`