permissions.yml
 <permission>: 
                         
  default: op#
Who this permission is granted to by default.
 “true”: all players.
“false”: no players.
“op”: only operators (also aliased as “isop”, “operator”, “isoperator”, “admin”, and “isadmin”).
“!op”: all players except operators (also aliased as “notop”, “!operator”, “notoperator”, “!admin”, “notadmin”).
 children: 
                        
<permission>: true#
A child permission of this permission.
 The value is either a boolean, where false inverts the whether the permission would be granted to this.
or a top level permission entry, except the default is this parent permissions default value, and any child permissions of the newly created permission are bubbled up to the top level.
description: ""#
The description of the permission.