prism-sg unit tests fail to compile after change to signature of render method

    [javac] Compiling 2 source files to C:\workspace\2.1-graphics-smoketest\label\windows-i586-14\rt-closed\javafx-sg-prism\build\test\classes
    [javac] C:\workspace\2.1-graphics-smoketest\label\windows-i586-14\rt-closed\javafx-sg-prism\test\com\sun\javafx\sg\prism\DirtyRegionTestBase.java:151: render(java.lang.Object) in com.sun.javafx.sg.BaseNode cannot be applied to (<nulltype>,<nulltype>,<nulltype>)
    [javac] parent.render(null, null, null);
    [javac] ^
    [javac] Note: C:\workspace\2.1-graphics-smoketest\label\windows-i586-14\rt-closed\javafx-sg-prism\test\com\sun\javafx\sg\prism\DirtyRegionTestBase.java uses unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error

BUILD FAILED