void render(RenderManager renderManager, Shader shader, Geometry geometry, LightList lights, BindUnits lastBindUnits) {
        TechniqueDefLogic logic = def.getLogic();
        logic.render(renderManager, shader, geometry, lights, lastBindUnits);
    }
Render the technique according to its {@link TechniqueDefLogic}.

@param renderManager The render manager to perform the rendering against.
@param shader The shader that was selected in 
{@link #makeCurrent(RenderManager, SafeArrayList, SafeArrayList, LightList, EnumSet)}.
@param geometry The geometry to render
@param lights Lights which influence the geometry.
@param lastTexUnit the index of the most recently used texture unit
jme3-core/src/main/java/com/jme3/material/Technique.java