ESXCLI methods

Hello Guys,

I am totally confused with esxcli things @version 5

$esxcli = get-esxcli -vmhost $esx

$esxcli | get-member

why I do not see methods here like $esxcli.storage ... $esxcli.network .... etc

I am really upset of why this part does not work also to list all devices

$esxcli.storage.nmp.device.list() | Where {$_.StorageArrayType -eq$satp} or

$esxcli.storage.nmp.device.list($null) | Where {$_.StorageArrayType -eq$satp}

Thanks in advance,