Environ returns a copy of strings representing the environment, in the form "key=value".

Get retrieves the value of the environment variable named by the key.

GetInt returns an integer if found in the environment and returns the default value otherwise.

IsSet returns if the given env key is set.

List all envs with a given prefix.

LockSetEnv locks modifications to environment.

LookupEnv retrieves the value of the environment variable named by the key.

RegisterGlobalCAs register the global root CAs.

SetEnvOff - turns off env lookup A global lock above this MUST ensure that.

SetEnvOn - turns on env lookup.