public Matrix4f mult(float scalar, Matrix4f store) {
        store.set(this);
        store.multLocal(scalar);
        return store;
    }
Multiply by the specified scalar.

@param scalar the scale factor to apply to all elements
@param store storage for the result (modified) or null to create a new
matrix
@return a scaled matrix (either store or a new instance)
jme3-core/src/main/java/com/jme3/math/Matrix4f.java