import java.io.*;

File libDir = new File( basedir, "child-b/target/dependency" );

String[] expectedFiles = {
    "child-a-1.0-SNAPSHOT.jar",
};

for ( String expectedFile : expectedFiles )
{
    File file = new File( libDir, expectedFile );
    System.out.println( "Checking for existence of " + file );
    if ( !file.isFile() )
    {
        throw new Exception( "Missing file " + file );
    }
}

return true;