Check array is empty or not

Hi Experts,

I have a requirement where I need to check ‘group’ array is empty or not. Could someone help with the JSON path expression.

Empty group array JSON looks like:
[
{
“group”: [
{}
]
}
]
Non empty group array json loiks like:

[
{
“group”: [
{
“ID”: “002”
}
{
“ID”: “003”
}
]
}
]

Thanks in Advance.