YAML

!_Schema
directives: !_Map_Directives
  !_Identifier DrctAlias: !_Directive
    aliases: [DirA1,DirA2]
    locations: !_Set(_Location){Field:_,Variable:_}
    name: DrctAlias
    repeatable: false

Directives

_Directive DrctAlias

_Aliases: DirA1, DirA2

_Locations: Field, Variable

Repeatable: false