public void setMaxTransitionWeight(double maxTransitionWeight) {
        if (maxTransitionWeight < 0.0 || maxTransitionWeight > 1.0) {
            throw new IllegalArgumentException("maxTransitionWeight must be between 0 and 1");
        }

        this.maxTransitionWeight = maxTransitionWeight;
    }
@param maxTransitionWeight The max transition weight. Must be &gt;=0 and &lt;=1 (default=1)
@throws IllegalArgumentException If maxTransitionWeight is not between 0 and 1.
jme3-core/src/main/java/com/jme3/anim/tween/action/BlendableAction.java