Functions/Public/Test-GitHubAssignee.ps1

function Test-GitHubAssignee {
    <#
    .Synopsis
    This function returns a boolean value, indicating whether or not a GitHub username is a valid assignee for the specified repository.

    .Link
    https://trevorsullivan.net
    https://developer.github.com/v3/issues/assignees/#check-assignee
    #>

    [CmdletBinding()]
    param ()

    $ApiCall = @{
        Body       = '';
        RestMethod = '';
        Method     = '';
    }

    Invoke-GitHubApi @ApiCall;
}