protected UniformBinding findWorldParam(String varName) {
        for (UniformBinding worldParam : techniqueDef.getWorldBindings()) {
            if (varName.equals(worldParam.toString())) {
                return worldParam;
            }
        }
        return null;
    }
finds an UniformBinding representing a WorldParam from the techniqueDef

@param varName the name of the WorldParam
@return the corresponding UniformBinding to the WorldParam
jme3-core/src/plugins/java/com/jme3/material/plugins/ShaderNodeLoaderDelegate.java