SqlSetup: Installing Multiple Instances on same computer from same bits

Is there a way to not have to copy a new set of the SQL bits for each instance of SQL being installed?

The process for installing an instance of SQL involves RoboCopying the SQL bits to a temp directory. I would like to be able to reuse that initial copy of the SQL bits over and over.

Windows OS: Windows Server 2012 R2
SQL Version: SQL 2012
PowerShell Version: 5.0.10514.6
Version of DSC module: 6.0.0.0 and dev

    xSqlServerSetup installSqlServer
    {
        DependsOn=@('[xDisk]Drive1','[xDisk]Drive2')
        InstanceName = $Node.InstanceName
        SourcePath  = $Node.SourcePath
        SourceCredential = $Node.ServeShareCredentials 
        Features = $Node.Features
        SetupCredential = $Node.SetupCredential
        SAPwd = $Node.SACred
        SQLSysAdminAccounts = $Node.AdminAccount
        SecurityMode = "SQL"
        InstanceDir  = $Node.InstanceDriveLetter+":\MSSQL"
        InstallSQLDataDir = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\MSSQL"
        SQLUserDBDir = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\Data"
        SQLUserDBLogDir = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\Data"
        SQLTempDBDir  = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\TempDB"
        SQLTempDBLogDir = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\TempDB"
        SQLBackupDir = $Node.BackupDriveLetter+":\Backup"
        ASDataDir = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\OLAP\Data"
        ASLogDir = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\OLAP\Data"
        ASBackupDir = $Node.DataDriveLetter+":\"+$Node.InstanceName+"\OLAP\Backup"
        ASTempDir = $Node.InstanceDriveLetter+":\"+$Node.InstanceName+"\OLAP\Temp"
        ASConfigDir = $Node.InstanceDriveLetter+":\"+$Node.InstanceName+"\OLAP\Config"
    }

Start at the xSqlServerSetup resource and trace how SourcePath and the SQL bits are handled during installation. Confirm whether repeated instances can reuse the initial copied bits, and document or test the expected behavior for multiple SQL Server instances on the same computer.