test-management/List-TestExecutionDifferences.ps1

function List-TestExecutionDifferences
{
    Param(
        [Parameter(Mandatory=$false)] [string] $TestDefinitionExecutionID,
        [Parameter(Mandatory=$false)] [string] $EdgeRCFile = '~\.edgerc',
        [Parameter(Mandatory=$false)] [string] $Section = 'default',
        [Parameter(Mandatory=$false)] [string] $AccountSwitchKey
    )

    $Path = "/test-management/v1/test-definition-executions/$TestDefinitionExecutionID/differences?accountSwitchKey=$AccountSwitchKey"

    try {
        $Result = Invoke-AkamaiRestMethod -Method GET -Path $Path -EdgeRCFile $EdgeRCFile -Section $Section
        return $Result
    }
    catch {
        throw $_.Exception 
    }
}