config/sublime/Packages/AAAPackageDev/Snippets/Syntax Definitions/captures.sublime-snippet

<snippet>
    <content><![CDATA["captures": {
    "${1:0}": { "name": "${2:definition.string.quoted.double.untitled}" }
}$0]]></content>
    <tabTrigger>captures</tabTrigger>
    <scope>source.json-tmlanguage</scope>
</snippet>