public Vector4f multLocal(float x, float y, float z, float w) {
        this.x *= x;
        this.y *= y;
        this.z *= z;
        this.w *= w;
        return this;
    }
<code>multLocal</code> multiplies this vector by 4 scalars
internally, and returns a handle to this vector for easy chaining of
calls.

@param x the scaling factor for the X component
@param y the scaling factor for the Y component
@param z the scaling factor for the Z component
@param w the scaling factor for the W component
@return this
jme3-core/src/main/java/com/jme3/math/Vector4f.java